Home / 1,591.28-2,196.36-1,125.68

Finding the Fourth Proportional to 1,591.28, 2,196.36 and 1,125.68

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Solution

The fourth proportional to 1,591.28, 2,196.36 and 1,125.68 is: 1,553.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,591.28 : 2,196.36 = 1,125.68 : x
  2. Step 2: Convert to fraction form
    1,591.28/2,196.36 = 1,125.68/x
  3. Step 3: Cross multiply
    1,591.28x = 2,196.36 × 1,125.68
  4. Step 4: Simplify right side
    1,591.28x = 2,472,398.52
  5. Step 5: Solve for x
    x = 2,472,398.52/1,591.28
  6. Step 6: Final answer
    x = 1,553.72

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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.