Home / 1,126.40-1,554.42-629.04

Finding the Fourth Proportional to 1,126.40, 1,554.42 and 629.04

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Solution

The fourth proportional to 1,126.40, 1,554.42 and 629.04 is: 868.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126.40 : 1,554.42 = 629.04 : x
  2. Step 2: Convert to fraction form
    1,126.40/1,554.42 = 629.04/x
  3. Step 3: Cross multiply
    1,126.40x = 1,554.42 × 629.04
  4. Step 4: Simplify right side
    1,126.40x = 977,792.36
  5. Step 5: Solve for x
    x = 977,792.36/1,126.40
  6. Step 6: Final answer
    x = 868.07

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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.