Home / 3,151.38-4,342.50-2,438.91

Finding the Fourth Proportional to 3,151.38, 4,342.50 and 2,438.91

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Solution

The fourth proportional to 3,151.38, 4,342.50 and 2,438.91 is: 3,360.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,151.38 : 4,342.50 = 2,438.91 : x
  2. Step 2: Convert to fraction form
    3,151.38/4,342.50 = 2,438.91/x
  3. Step 3: Cross multiply
    3,151.38x = 4,342.50 × 2,438.91
  4. Step 4: Simplify right side
    3,151.38x = 10,590,966.68
  5. Step 5: Solve for x
    x = 10,590,966.68/3,151.38
  6. Step 6: Final answer
    x = 3,360.74

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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.