Home / 8,938.59-12,336.35-5,161.75

Finding the Fourth Proportional to 8,938.59, 12,336.35 and 5,161.75

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Solution

The fourth proportional to 8,938.59, 12,336.35 and 5,161.75 is: 7,123.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,938.59 : 12,336.35 = 5,161.75 : x
  2. Step 2: Convert to fraction form
    8,938.59/12,336.35 = 5,161.75/x
  3. Step 3: Cross multiply
    8,938.59x = 12,336.35 × 5,161.75
  4. Step 4: Simplify right side
    8,938.59x = 63,677,154.61
  5. Step 5: Solve for x
    x = 63,677,154.61/8,938.59
  6. Step 6: Final answer
    x = 7,123.85

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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.