Home / 3,187.11-4,781.16-1,543.76

Finding the Fourth Proportional to 3,187.11, 4,781.16 and 1,543.76

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Solution

The fourth proportional to 3,187.11, 4,781.16 and 1,543.76 is: 2,315.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,187.11 : 4,781.16 = 1,543.76 : x
  2. Step 2: Convert to fraction form
    3,187.11/4,781.16 = 1,543.76/x
  3. Step 3: Cross multiply
    3,187.11x = 4,781.16 × 1,543.76
  4. Step 4: Simplify right side
    3,187.11x = 7,380,957.59
  5. Step 5: Solve for x
    x = 7,380,957.59/3,187.11
  6. Step 6: Final answer
    x = 2,315.88

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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.