Home / 2,687.91-4,031.86-1,045.61

Finding the Fourth Proportional to 2,687.91, 4,031.86 and 1,045.61

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Solution

The fourth proportional to 2,687.91, 4,031.86 and 1,045.61 is: 1,568.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,687.91 : 4,031.86 = 1,045.61 : x
  2. Step 2: Convert to fraction form
    2,687.91/4,031.86 = 1,045.61/x
  3. Step 3: Cross multiply
    2,687.91x = 4,031.86 × 1,045.61
  4. Step 4: Simplify right side
    2,687.91x = 4,215,753.13
  5. Step 5: Solve for x
    x = 4,215,753.13/2,687.91
  6. Step 6: Final answer
    x = 1,568.41

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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.