Home / 1,247.44-1,722.20-1,109.04

Finding the Fourth Proportional to 1,247.44, 1,722.20 and 1,109.04

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Solution

The fourth proportional to 1,247.44, 1,722.20 and 1,109.04 is: 1,531.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247.44 : 1,722.20 = 1,109.04 : x
  2. Step 2: Convert to fraction form
    1,247.44/1,722.20 = 1,109.04/x
  3. Step 3: Cross multiply
    1,247.44x = 1,722.20 × 1,109.04
  4. Step 4: Simplify right side
    1,247.44x = 1,909,988.69
  5. Step 5: Solve for x
    x = 1,909,988.69/1,247.44
  6. Step 6: Final answer
    x = 1,531.13

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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.