Home / 1,451.30-2,002.25-1,137.78

Finding the Fourth Proportional to 1,451.30, 2,002.25 and 1,137.78

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Solution

The fourth proportional to 1,451.30, 2,002.25 and 1,137.78 is: 1,569.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,451.30 : 2,002.25 = 1,137.78 : x
  2. Step 2: Convert to fraction form
    1,451.30/2,002.25 = 1,137.78/x
  3. Step 3: Cross multiply
    1,451.30x = 2,002.25 × 1,137.78
  4. Step 4: Simplify right side
    1,451.30x = 2,278,120.01
  5. Step 5: Solve for x
    x = 2,278,120.01/1,451.30
  6. Step 6: Final answer
    x = 1,569.71

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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.