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Finding the Fourth Proportional to 9,902.79, 13,659.71 and 6,127.11

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Solution

The fourth proportional to 9,902.79, 13,659.71 and 6,127.11 is: 8,451.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,902.79 : 13,659.71 = 6,127.11 : x
  2. Step 2: Convert to fraction form
    9,902.79/13,659.71 = 6,127.11/x
  3. Step 3: Cross multiply
    9,902.79x = 13,659.71 × 6,127.11
  4. Step 4: Simplify right side
    9,902.79x = 83,694,515.10
  5. Step 5: Solve for x
    x = 83,694,515.10/9,902.79
  6. Step 6: Final answer
    x = 8,451.61

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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.