Home / 1,988.75-2,744.48-1,149.29

Finding the Fourth Proportional to 1,988.75, 2,744.48 and 1,149.29

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Solution

The fourth proportional to 1,988.75, 2,744.48 and 1,149.29 is: 1,586.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988.75 : 2,744.48 = 1,149.29 : x
  2. Step 2: Convert to fraction form
    1,988.75/2,744.48 = 1,149.29/x
  3. Step 3: Cross multiply
    1,988.75x = 2,744.48 × 1,149.29
  4. Step 4: Simplify right side
    1,988.75x = 3,154,202.86
  5. Step 5: Solve for x
    x = 3,154,202.86/1,988.75
  6. Step 6: Final answer
    x = 1,586.02

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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.