Home / 2,806.13-4,209.20-726.14

Finding the Fourth Proportional to 2,806.13, 4,209.20 and 726.14

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Solution

The fourth proportional to 2,806.13, 4,209.20 and 726.14 is: 1,089.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,806.13 : 4,209.20 = 726.14 : x
  2. Step 2: Convert to fraction form
    2,806.13/4,209.20 = 726.14/x
  3. Step 3: Cross multiply
    2,806.13x = 4,209.20 × 726.14
  4. Step 4: Simplify right side
    2,806.13x = 3,056,468.49
  5. Step 5: Solve for x
    x = 3,056,468.49/2,806.13
  6. Step 6: Final answer
    x = 1,089.21

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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.