Home / 2,712.31-3,740.72-2,151.90

Finding the Fourth Proportional to 2,712.31, 3,740.72 and 2,151.90

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Solution

The fourth proportional to 2,712.31, 3,740.72 and 2,151.90 is: 2,967.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,712.31 : 3,740.72 = 2,151.90 : x
  2. Step 2: Convert to fraction form
    2,712.31/3,740.72 = 2,151.90/x
  3. Step 3: Cross multiply
    2,712.31x = 3,740.72 × 2,151.90
  4. Step 4: Simplify right side
    2,712.31x = 8,049,644.61
  5. Step 5: Solve for x
    x = 8,049,644.61/2,712.31
  6. Step 6: Final answer
    x = 2,967.82

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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.