Home / 1,249.20-1,873.58-383.31

Finding the Fourth Proportional to 1,249.20, 1,873.58 and 383.31

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Solution

The fourth proportional to 1,249.20, 1,873.58 and 383.31 is: 574.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,249.20 : 1,873.58 = 383.31 : x
  2. Step 2: Convert to fraction form
    1,249.20/1,873.58 = 383.31/x
  3. Step 3: Cross multiply
    1,249.20x = 1,873.58 × 383.31
  4. Step 4: Simplify right side
    1,249.20x = 718,160.03
  5. Step 5: Solve for x
    x = 718,160.03/1,249.20
  6. Step 6: Final answer
    x = 574.90

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Double scale
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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.