Home / 1,126.96-1,691.50-579.53

Finding the Fourth Proportional to 1,126.96, 1,691.50 and 579.53

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Solution

The fourth proportional to 1,126.96, 1,691.50 and 579.53 is: 869.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126.96 : 1,691.50 = 579.53 : x
  2. Step 2: Convert to fraction form
    1,126.96/1,691.50 = 579.53/x
  3. Step 3: Cross multiply
    1,126.96x = 1,691.50 × 579.53
  4. Step 4: Simplify right side
    1,126.96x = 980,266.54
  5. Step 5: Solve for x
    x = 980,266.54/1,126.96
  6. Step 6: Final answer
    x = 869.84

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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.