Home / 1,358.12-2,037.32-627.90

Finding the Fourth Proportional to 1,358.12, 2,037.32 and 627.90

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Solution

The fourth proportional to 1,358.12, 2,037.32 and 627.90 is: 941.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,358.12 : 2,037.32 = 627.90 : x
  2. Step 2: Convert to fraction form
    1,358.12/2,037.32 = 627.90/x
  3. Step 3: Cross multiply
    1,358.12x = 2,037.32 × 627.90
  4. Step 4: Simplify right side
    1,358.12x = 1,279,233.23
  5. Step 5: Solve for x
    x = 1,279,233.23/1,358.12
  6. Step 6: Final answer
    x = 941.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.