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Finding the Fourth Proportional to 7,099.68, 9,807.12 and 6,437.28

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Solution

The fourth proportional to 7,099.68, 9,807.12 and 6,437.28 is: 8,892.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,099.68 : 9,807.12 = 6,437.28 : x
  2. Step 2: Convert to fraction form
    7,099.68/9,807.12 = 6,437.28/x
  3. Step 3: Cross multiply
    7,099.68x = 9,807.12 × 6,437.28
  4. Step 4: Simplify right side
    7,099.68x = 63,131,177.43
  5. Step 5: Solve for x
    x = 63,131,177.43/7,099.68
  6. Step 6: Final answer
    x = 8,892.12

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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.