Home / 1,549.98-2,139.88-1,077.74

Finding the Fourth Proportional to 1,549.98, 2,139.88 and 1,077.74

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Solution

The fourth proportional to 1,549.98, 2,139.88 and 1,077.74 is: 1,487.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,549.98 : 2,139.88 = 1,077.74 : x
  2. Step 2: Convert to fraction form
    1,549.98/2,139.88 = 1,077.74/x
  3. Step 3: Cross multiply
    1,549.98x = 2,139.88 × 1,077.74
  4. Step 4: Simplify right side
    1,549.98x = 2,306,234.27
  5. Step 5: Solve for x
    x = 2,306,234.27/1,549.98
  6. Step 6: Final answer
    x = 1,487.91

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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.