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Finding the Fourth Proportional to 7,700.02, 11,489.54 and 7,229.82

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Solution

The fourth proportional to 7,700.02, 11,489.54 and 7,229.82 is: 10,787.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,700.02 : 11,489.54 = 7,229.82 : x
  2. Step 2: Convert to fraction form
    7,700.02/11,489.54 = 7,229.82/x
  3. Step 3: Cross multiply
    7,700.02x = 11,489.54 × 7,229.82
  4. Step 4: Simplify right side
    7,700.02x = 83,067,306.08
  5. Step 5: Solve for x
    x = 83,067,306.08/7,700.02
  6. Step 6: Final answer
    x = 10,787.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.