Home / 3,387.45-4,672.17-2,391.69

Finding the Fourth Proportional to 3,387.45, 4,672.17 and 2,391.69

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Solution

The fourth proportional to 3,387.45, 4,672.17 and 2,391.69 is: 3,298.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,387.45 : 4,672.17 = 2,391.69 : x
  2. Step 2: Convert to fraction form
    3,387.45/4,672.17 = 2,391.69/x
  3. Step 3: Cross multiply
    3,387.45x = 4,672.17 × 2,391.69
  4. Step 4: Simplify right side
    3,387.45x = 11,174,382.27
  5. Step 5: Solve for x
    x = 11,174,382.27/3,387.45
  6. Step 6: Final answer
    x = 3,298.76

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1.5x scale

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.