Home / 1,189.18-1,781.84-1,144.22

Finding the Fourth Proportional to 1,189.18, 1,781.84 and 1,144.22

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Solution

The fourth proportional to 1,189.18, 1,781.84 and 1,144.22 is: 1,714.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189.18 : 1,781.84 = 1,144.22 : x
  2. Step 2: Convert to fraction form
    1,189.18/1,781.84 = 1,144.22/x
  3. Step 3: Cross multiply
    1,189.18x = 1,781.84 × 1,144.22
  4. Step 4: Simplify right side
    1,189.18x = 2,038,816.96
  5. Step 5: Solve for x
    x = 2,038,816.96/1,189.18
  6. Step 6: Final answer
    x = 1,714.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.