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Finding the Fourth Proportional to 6,080.64, 8,394.90 and 3,988.41

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Solution

The fourth proportional to 6,080.64, 8,394.90 and 3,988.41 is: 5,506.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,080.64 : 8,394.90 = 3,988.41 : x
  2. Step 2: Convert to fraction form
    6,080.64/8,394.90 = 3,988.41/x
  3. Step 3: Cross multiply
    6,080.64x = 8,394.90 × 3,988.41
  4. Step 4: Simplify right side
    6,080.64x = 33,482,303.11
  5. Step 5: Solve for x
    x = 33,482,303.11/6,080.64
  6. Step 6: Final answer
    x = 5,506.38

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Find fourth proportional to 3,040.32, 4,197.45 and 1,994.21
Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.