Home / 1,988.38-2,743.77-1,149.36

Finding the Fourth Proportional to 1,988.38, 2,743.77 and 1,149.36

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Solution

The fourth proportional to 1,988.38, 2,743.77 and 1,149.36 is: 1,586.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988.38 : 2,743.77 = 1,149.36 : x
  2. Step 2: Convert to fraction form
    1,988.38/2,743.77 = 1,149.36/x
  3. Step 3: Cross multiply
    1,988.38x = 2,743.77 × 1,149.36
  4. Step 4: Simplify right side
    1,988.38x = 3,153,579.49
  5. Step 5: Solve for x
    x = 3,153,579.49/1,988.38
  6. Step 6: Final answer
    x = 1,586.00

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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.