Home / 1,549.80-2,321.98-1,291.46

Finding the Fourth Proportional to 1,549.80, 2,321.98 and 1,291.46

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Solution

The fourth proportional to 1,549.80, 2,321.98 and 1,291.46 is: 1,934.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,549.80 : 2,321.98 = 1,291.46 : x
  2. Step 2: Convert to fraction form
    1,549.80/2,321.98 = 1,291.46/x
  3. Step 3: Cross multiply
    1,549.80x = 2,321.98 × 1,291.46
  4. Step 4: Simplify right side
    1,549.80x = 2,998,729.45
  5. Step 5: Solve for x
    x = 2,998,729.45/1,549.80
  6. Step 6: Final answer
    x = 1,934.91

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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.