Home / 3,920.38-5,411.26-2,242.74

Finding the Fourth Proportional to 3,920.38, 5,411.26 and 2,242.74

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Solution

The fourth proportional to 3,920.38, 5,411.26 and 2,242.74 is: 3,095.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,920.38 : 5,411.26 = 2,242.74 : x
  2. Step 2: Convert to fraction form
    3,920.38/5,411.26 = 2,242.74/x
  3. Step 3: Cross multiply
    3,920.38x = 5,411.26 × 2,242.74
  4. Step 4: Simplify right side
    3,920.38x = 12,136,049.25
  5. Step 5: Solve for x
    x = 12,136,049.25/3,920.38
  6. Step 6: Final answer
    x = 3,095.63

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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.