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Finding the Fourth Proportional to 9,369.14, 12,929.02 and 5,177.12

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Solution

The fourth proportional to 9,369.14, 12,929.02 and 5,177.12 is: 7,144.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,369.14 : 12,929.02 = 5,177.12 : x
  2. Step 2: Convert to fraction form
    9,369.14/12,929.02 = 5,177.12/x
  3. Step 3: Cross multiply
    9,369.14x = 12,929.02 × 5,177.12
  4. Step 4: Simplify right side
    9,369.14x = 66,935,010.43
  5. Step 5: Solve for x
    x = 66,935,010.43/9,369.14
  6. Step 6: Final answer
    x = 7,144.20

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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.