Home / 8,684.10-11,989.17-5,705.13

Finding the Fourth Proportional to 8,684.10, 11,989.17 and 5,705.13

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Solution

The fourth proportional to 8,684.10, 11,989.17 and 5,705.13 is: 7,876.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,684.10 : 11,989.17 = 5,705.13 : x
  2. Step 2: Convert to fraction form
    8,684.10/11,989.17 = 5,705.13/x
  3. Step 3: Cross multiply
    8,684.10x = 11,989.17 × 5,705.13
  4. Step 4: Simplify right side
    8,684.10x = 68,399,773.44
  5. Step 5: Solve for x
    x = 68,399,773.44/8,684.10
  6. Step 6: Final answer
    x = 7,876.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.