Home / 8,616.90-12,914.17-3,869.55

Finding the Fourth Proportional to 8,616.90, 12,914.17 and 3,869.55

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Solution

The fourth proportional to 8,616.90, 12,914.17 and 3,869.55 is: 5,799.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,616.90 : 12,914.17 = 3,869.55 : x
  2. Step 2: Convert to fraction form
    8,616.90/12,914.17 = 3,869.55/x
  3. Step 3: Cross multiply
    8,616.90x = 12,914.17 × 3,869.55
  4. Step 4: Simplify right side
    8,616.90x = 49,972,008.37
  5. Step 5: Solve for x
    x = 49,972,008.37/8,616.90
  6. Step 6: Final answer
    x = 5,799.31

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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.