Home / 1,126.24-1,553.98-628.86

Finding the Fourth Proportional to 1,126.24, 1,553.98 and 628.86

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Solution

The fourth proportional to 1,126.24, 1,553.98 and 628.86 is: 867.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126.24 : 1,553.98 = 628.86 : x
  2. Step 2: Convert to fraction form
    1,126.24/1,553.98 = 628.86/x
  3. Step 3: Cross multiply
    1,126.24x = 1,553.98 × 628.86
  4. Step 4: Simplify right side
    1,126.24x = 977,235.86
  5. Step 5: Solve for x
    x = 977,235.86/1,126.24
  6. Step 6: Final answer
    x = 867.70

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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.