Home / 4,079.97-5,631.36-2,312.61

Finding the Fourth Proportional to 4,079.97, 5,631.36 and 2,312.61

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Solution

The fourth proportional to 4,079.97, 5,631.36 and 2,312.61 is: 3,191.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,079.97 : 5,631.36 = 2,312.61 : x
  2. Step 2: Convert to fraction form
    4,079.97/5,631.36 = 2,312.61/x
  3. Step 3: Cross multiply
    4,079.97x = 5,631.36 × 2,312.61
  4. Step 4: Simplify right side
    4,079.97x = 13,023,139.45
  5. Step 5: Solve for x
    x = 13,023,139.45/4,079.97
  6. Step 6: Final answer
    x = 3,191.97

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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.