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Finding the Fourth Proportional to 2,617.92, 3,926.94 and 886.53

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Solution

The fourth proportional to 2,617.92, 3,926.94 and 886.53 is: 1,329.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,617.92 : 3,926.94 = 886.53 : x
  2. Step 2: Convert to fraction form
    2,617.92/3,926.94 = 886.53/x
  3. Step 3: Cross multiply
    2,617.92x = 3,926.94 × 886.53
  4. Step 4: Simplify right side
    2,617.92x = 3,481,350.12
  5. Step 5: Solve for x
    x = 3,481,350.12/2,617.92
  6. Step 6: Final answer
    x = 1,329.82

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Similar ratio
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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.