Home / 3,476.91-5,215.40-2,781.86

Finding the Fourth Proportional to 3,476.91, 5,215.40 and 2,781.86

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Solution

The fourth proportional to 3,476.91, 5,215.40 and 2,781.86 is: 4,172.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,476.91 : 5,215.40 = 2,781.86 : x
  2. Step 2: Convert to fraction form
    3,476.91/5,215.40 = 2,781.86/x
  3. Step 3: Cross multiply
    3,476.91x = 5,215.40 × 2,781.86
  4. Step 4: Simplify right side
    3,476.91x = 14,508,472.66
  5. Step 5: Solve for x
    x = 14,508,472.66/3,476.91
  6. Step 6: Final answer
    x = 4,172.81

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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.