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Finding the Fourth Proportional to 1,612.68, 2,414.82 and 878.88

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Solution

The fourth proportional to 1,612.68, 2,414.82 and 878.88 is: 1,316.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,612.68 : 2,414.82 = 878.88 : x
  2. Step 2: Convert to fraction form
    1,612.68/2,414.82 = 878.88/x
  3. Step 3: Cross multiply
    1,612.68x = 2,414.82 × 878.88
  4. Step 4: Simplify right side
    1,612.68x = 2,122,337.00
  5. Step 5: Solve for x
    x = 2,122,337.00/1,612.68
  6. Step 6: Final answer
    x = 1,316.03

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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.