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Finding the Fourth Proportional to 9,706.68, 14,562.36 and 2,781

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Solution

The fourth proportional to 9,706.68, 14,562.36 and 2,781 is: 4,172.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,706.68 : 14,562.36 = 2,781 : x
  2. Step 2: Convert to fraction form
    9,706.68/14,562.36 = 2,781/x
  3. Step 3: Cross multiply
    9,706.68x = 14,562.36 × 2,781
  4. Step 4: Simplify right side
    9,706.68x = 40,497,923.16
  5. Step 5: Solve for x
    x = 40,497,923.16/9,706.68
  6. Step 6: Final answer
    x = 4,172.17

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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.