Home / 2,891.11-4,331.22-1,428.55

Finding the Fourth Proportional to 2,891.11, 4,331.22 and 1,428.55

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Solution

The fourth proportional to 2,891.11, 4,331.22 and 1,428.55 is: 2,140.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,891.11 : 4,331.22 = 1,428.55 : x
  2. Step 2: Convert to fraction form
    2,891.11/4,331.22 = 1,428.55/x
  3. Step 3: Cross multiply
    2,891.11x = 4,331.22 × 1,428.55
  4. Step 4: Simplify right side
    2,891.11x = 6,187,364.33
  5. Step 5: Solve for x
    x = 6,187,364.33/2,891.11
  6. Step 6: Final answer
    x = 2,140.13

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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.