Home / 2,486.39-3,729.57-926.78

Finding the Fourth Proportional to 2,486.39, 3,729.57 and 926.78

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Solution

The fourth proportional to 2,486.39, 3,729.57 and 926.78 is: 1,390.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,486.39 : 3,729.57 = 926.78 : x
  2. Step 2: Convert to fraction form
    2,486.39/3,729.57 = 926.78/x
  3. Step 3: Cross multiply
    2,486.39x = 3,729.57 × 926.78
  4. Step 4: Simplify right side
    2,486.39x = 3,456,472.24
  5. Step 5: Solve for x
    x = 3,456,472.24/2,486.39
  6. Step 6: Final answer
    x = 1,390.16

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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.