Home / 8,125.31-12,187.96-2,931.18

Finding the Fourth Proportional to 8,125.31, 12,187.96 and 2,931.18

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Solution

The fourth proportional to 8,125.31, 12,187.96 and 2,931.18 is: 4,396.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,125.31 : 12,187.96 = 2,931.18 : x
  2. Step 2: Convert to fraction form
    8,125.31/12,187.96 = 2,931.18/x
  3. Step 3: Cross multiply
    8,125.31x = 12,187.96 × 2,931.18
  4. Step 4: Simplify right side
    8,125.31x = 35,725,104.59
  5. Step 5: Solve for x
    x = 35,725,104.59/8,125.31
  6. Step 6: Final answer
    x = 4,396.77

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Similar ratio
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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.