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Finding the Fourth Proportional to 7,691.77, 10,618.73 and 6,162.70

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Solution

The fourth proportional to 7,691.77, 10,618.73 and 6,162.70 is: 8,507.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,691.77 : 10,618.73 = 6,162.70 : x
  2. Step 2: Convert to fraction form
    7,691.77/10,618.73 = 6,162.70/x
  3. Step 3: Cross multiply
    7,691.77x = 10,618.73 × 6,162.70
  4. Step 4: Simplify right side
    7,691.77x = 65,439,963.46
  5. Step 5: Solve for x
    x = 65,439,963.46/7,691.77
  6. Step 6: Final answer
    x = 8,507.79

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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.