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Finding the Fourth Proportional to 8,916.68, 12,305.04 and 4,937.96

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Solution

The fourth proportional to 8,916.68, 12,305.04 and 4,937.96 is: 6,814.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,916.68 : 12,305.04 = 4,937.96 : x
  2. Step 2: Convert to fraction form
    8,916.68/12,305.04 = 4,937.96/x
  3. Step 3: Cross multiply
    8,916.68x = 12,305.04 × 4,937.96
  4. Step 4: Simplify right side
    8,916.68x = 60,761,795.32
  5. Step 5: Solve for x
    x = 60,761,795.32/8,916.68
  6. Step 6: Final answer
    x = 6,814.40

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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.