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Finding the Fourth Proportional to 6,425.36, 8,867.12 and 3,771.80

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Solution

The fourth proportional to 6,425.36, 8,867.12 and 3,771.80 is: 5,205.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,425.36 : 8,867.12 = 3,771.80 : x
  2. Step 2: Convert to fraction form
    6,425.36/8,867.12 = 3,771.80/x
  3. Step 3: Cross multiply
    6,425.36x = 8,867.12 × 3,771.80
  4. Step 4: Simplify right side
    6,425.36x = 33,445,003.22
  5. Step 5: Solve for x
    x = 33,445,003.22/6,425.36
  6. Step 6: Final answer
    x = 5,205.16

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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.