Home / 1,126.30-1,554.39-629.03

Finding the Fourth Proportional to 1,126.30, 1,554.39 and 629.03

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Solution

The fourth proportional to 1,126.30, 1,554.39 and 629.03 is: 868.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126.30 : 1,554.39 = 629.03 : x
  2. Step 2: Convert to fraction form
    1,126.30/1,554.39 = 629.03/x
  3. Step 3: Cross multiply
    1,126.30x = 1,554.39 × 629.03
  4. Step 4: Simplify right side
    1,126.30x = 977,757.94
  5. Step 5: Solve for x
    x = 977,757.94/1,126.30
  6. Step 6: Final answer
    x = 868.12

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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.