Home / 8,781.78-13,176.18-3,854.28

Finding the Fourth Proportional to 8,781.78, 13,176.18 and 3,854.28

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Solution

The fourth proportional to 8,781.78, 13,176.18 and 3,854.28 is: 5,782.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,781.78 : 13,176.18 = 3,854.28 : x
  2. Step 2: Convert to fraction form
    8,781.78/13,176.18 = 3,854.28/x
  3. Step 3: Cross multiply
    8,781.78x = 13,176.18 × 3,854.28
  4. Step 4: Simplify right side
    8,781.78x = 50,784,687.05
  5. Step 5: Solve for x
    x = 50,784,687.05/8,781.78
  6. Step 6: Final answer
    x = 5,782.96

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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.