Home / 1,988.61-2,744.29-1,149.31

Finding the Fourth Proportional to 1,988.61, 2,744.29 and 1,149.31

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Solution

The fourth proportional to 1,988.61, 2,744.29 and 1,149.31 is: 1,586.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988.61 : 2,744.29 = 1,149.31 : x
  2. Step 2: Convert to fraction form
    1,988.61/2,744.29 = 1,149.31/x
  3. Step 3: Cross multiply
    1,988.61x = 2,744.29 × 1,149.31
  4. Step 4: Simplify right side
    1,988.61x = 3,154,044.81
  5. Step 5: Solve for x
    x = 3,154,044.81/1,988.61
  6. Step 6: Final answer
    x = 1,586.06

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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.