Home / 1,124.20-1,550.82-731.44

Finding the Fourth Proportional to 1,124.20, 1,550.82 and 731.44

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Solution

The fourth proportional to 1,124.20, 1,550.82 and 731.44 is: 1,009.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,124.20 : 1,550.82 = 731.44 : x
  2. Step 2: Convert to fraction form
    1,124.20/1,550.82 = 731.44/x
  3. Step 3: Cross multiply
    1,124.20x = 1,550.82 × 731.44
  4. Step 4: Simplify right side
    1,124.20x = 1,134,331.78
  5. Step 5: Solve for x
    x = 1,134,331.78/1,124.20
  6. Step 6: Final answer
    x = 1,009.01

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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.