Home / 8,917.68-12,306.42-4,938.96

Finding the Fourth Proportional to 8,917.68, 12,306.42 and 4,938.96

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Solution

The fourth proportional to 8,917.68, 12,306.42 and 4,938.96 is: 6,815.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,917.68 : 12,306.42 = 4,938.96 : x
  2. Step 2: Convert to fraction form
    8,917.68/12,306.42 = 4,938.96/x
  3. Step 3: Cross multiply
    8,917.68x = 12,306.42 × 4,938.96
  4. Step 4: Simplify right side
    8,917.68x = 60,780,916.12
  5. Step 5: Solve for x
    x = 60,780,916.12/8,917.68
  6. Step 6: Final answer
    x = 6,815.78

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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.