Home / 2,113.11-3,170.18-726.47

Finding the Fourth Proportional to 2,113.11, 3,170.18 and 726.47

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Solution

The fourth proportional to 2,113.11, 3,170.18 and 726.47 is: 1,089.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,113.11 : 3,170.18 = 726.47 : x
  2. Step 2: Convert to fraction form
    2,113.11/3,170.18 = 726.47/x
  3. Step 3: Cross multiply
    2,113.11x = 3,170.18 × 726.47
  4. Step 4: Simplify right side
    2,113.11x = 2,303,026.63
  5. Step 5: Solve for x
    x = 2,303,026.63/2,113.11
  6. Step 6: Final answer
    x = 1,089.88

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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.