Home / 1,132.12-1,562.30-634.80

Finding the Fourth Proportional to 1,132.12, 1,562.30 and 634.80

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Solution

The fourth proportional to 1,132.12, 1,562.30 and 634.80 is: 876.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,132.12 : 1,562.30 = 634.80 : x
  2. Step 2: Convert to fraction form
    1,132.12/1,562.30 = 634.80/x
  3. Step 3: Cross multiply
    1,132.12x = 1,562.30 × 634.80
  4. Step 4: Simplify right side
    1,132.12x = 991,748.04
  5. Step 5: Solve for x
    x = 991,748.04/1,132.12
  6. Step 6: Final answer
    x = 876.01

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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.