Home / 1,126.27-1,554.30-628.91

Finding the Fourth Proportional to 1,126.27, 1,554.30 and 628.91

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Solution

The fourth proportional to 1,126.27, 1,554.30 and 628.91 is: 867.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126.27 : 1,554.30 = 628.91 : x
  2. Step 2: Convert to fraction form
    1,126.27/1,554.30 = 628.91/x
  3. Step 3: Cross multiply
    1,126.27x = 1,554.30 × 628.91
  4. Step 4: Simplify right side
    1,126.27x = 977,514.81
  5. Step 5: Solve for x
    x = 977,514.81/1,126.27
  6. Step 6: Final answer
    x = 867.92

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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.