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Finding the Fourth Proportional to 1,677.38, 2,517.62 and 856.26

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Solution

The fourth proportional to 1,677.38, 2,517.62 and 856.26 is: 1,285.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,677.38 : 2,517.62 = 856.26 : x
  2. Step 2: Convert to fraction form
    1,677.38/2,517.62 = 856.26/x
  3. Step 3: Cross multiply
    1,677.38x = 2,517.62 × 856.26
  4. Step 4: Simplify right side
    1,677.38x = 2,155,737.30
  5. Step 5: Solve for x
    x = 2,155,737.30/1,677.38
  6. Step 6: Final answer
    x = 1,285.18

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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.