Home / 1,101.12-1,519.60-629.04

Finding the Fourth Proportional to 1,101.12, 1,519.60 and 629.04

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Solution

The fourth proportional to 1,101.12, 1,519.60 and 629.04 is: 868.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,101.12 : 1,519.60 = 629.04 : x
  2. Step 2: Convert to fraction form
    1,101.12/1,519.60 = 629.04/x
  3. Step 3: Cross multiply
    1,101.12x = 1,519.60 × 629.04
  4. Step 4: Simplify right side
    1,101.12x = 955,889.18
  5. Step 5: Solve for x
    x = 955,889.18/1,101.12
  6. Step 6: Final answer
    x = 868.11

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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.