Home / 1,126.23-1,554.20-628.91

Finding the Fourth Proportional to 1,126.23, 1,554.20 and 628.91

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Solution

The fourth proportional to 1,126.23, 1,554.20 and 628.91 is: 867.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126.23 : 1,554.20 = 628.91 : x
  2. Step 2: Convert to fraction form
    1,126.23/1,554.20 = 628.91/x
  3. Step 3: Cross multiply
    1,126.23x = 1,554.20 × 628.91
  4. Step 4: Simplify right side
    1,126.23x = 977,449.19
  5. Step 5: Solve for x
    x = 977,449.19/1,126.23
  6. Step 6: Final answer
    x = 867.90

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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.