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Finding the Fourth Proportional to 9,008.80, 13,505.10 and 5,720.20

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Solution

The fourth proportional to 9,008.80, 13,505.10 and 5,720.20 is: 8,575.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,008.80 : 13,505.10 = 5,720.20 : x
  2. Step 2: Convert to fraction form
    9,008.80/13,505.10 = 5,720.20/x
  3. Step 3: Cross multiply
    9,008.80x = 13,505.10 × 5,720.20
  4. Step 4: Simplify right side
    9,008.80x = 77,251,873.02
  5. Step 5: Solve for x
    x = 77,251,873.02/9,008.80
  6. Step 6: Final answer
    x = 8,575.16

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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.