Home / 1,126.28-1,554.41-628.95

Finding the Fourth Proportional to 1,126.28, 1,554.41 and 628.95

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Solution

The fourth proportional to 1,126.28, 1,554.41 and 628.95 is: 868.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126.28 : 1,554.41 = 628.95 : x
  2. Step 2: Convert to fraction form
    1,126.28/1,554.41 = 628.95/x
  3. Step 3: Cross multiply
    1,126.28x = 1,554.41 × 628.95
  4. Step 4: Simplify right side
    1,126.28x = 977,644.83
  5. Step 5: Solve for x
    x = 977,644.83/1,126.28
  6. Step 6: Final answer
    x = 868.03

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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.