Home / 3,723.92-5,139.15-2,045.40

Finding the Fourth Proportional to 3,723.92, 5,139.15 and 2,045.40

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Solution

The fourth proportional to 3,723.92, 5,139.15 and 2,045.40 is: 2,822.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,723.92 : 5,139.15 = 2,045.40 : x
  2. Step 2: Convert to fraction form
    3,723.92/5,139.15 = 2,045.40/x
  3. Step 3: Cross multiply
    3,723.92x = 5,139.15 × 2,045.40
  4. Step 4: Simplify right side
    3,723.92x = 10,511,617.41
  5. Step 5: Solve for x
    x = 10,511,617.41/3,723.92
  6. Step 6: Final answer
    x = 2,822.73

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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.