Home / 8,691.84-13,039.38-3,498.12

Finding the Fourth Proportional to 8,691.84, 13,039.38 and 3,498.12

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Solution

The fourth proportional to 8,691.84, 13,039.38 and 3,498.12 is: 5,247.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,691.84 : 13,039.38 = 3,498.12 : x
  2. Step 2: Convert to fraction form
    8,691.84/13,039.38 = 3,498.12/x
  3. Step 3: Cross multiply
    8,691.84x = 13,039.38 × 3,498.12
  4. Step 4: Simplify right side
    8,691.84x = 45,613,315.97
  5. Step 5: Solve for x
    x = 45,613,315.97/8,691.84
  6. Step 6: Final answer
    x = 5,247.83

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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.