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Finding the Fourth Proportional to 5,661.60, 8,468.40 and 5,080.80

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Solution

The fourth proportional to 5,661.60, 8,468.40 and 5,080.80 is: 7,599.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,661.60 : 8,468.40 = 5,080.80 : x
  2. Step 2: Convert to fraction form
    5,661.60/8,468.40 = 5,080.80/x
  3. Step 3: Cross multiply
    5,661.60x = 8,468.40 × 5,080.80
  4. Step 4: Simplify right side
    5,661.60x = 43,026,246.72
  5. Step 5: Solve for x
    x = 43,026,246.72/5,661.60
  6. Step 6: Final answer
    x = 7,599.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.