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Finding the Fourth Proportional to 8,812.47, 13,192.73 and 7,718.97

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Solution

The fourth proportional to 8,812.47, 13,192.73 and 7,718.97 is: 11,555.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,812.47 : 13,192.73 = 7,718.97 : x
  2. Step 2: Convert to fraction form
    8,812.47/13,192.73 = 7,718.97/x
  3. Step 3: Cross multiply
    8,812.47x = 13,192.73 × 7,718.97
  4. Step 4: Simplify right side
    8,812.47x = 101,834,227.97
  5. Step 5: Solve for x
    x = 101,834,227.97/8,812.47
  6. Step 6: Final answer
    x = 11,555.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.