Home / 2,690.29-3,711.66-1,511.11

Finding the Fourth Proportional to 2,690.29, 3,711.66 and 1,511.11

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Solution

The fourth proportional to 2,690.29, 3,711.66 and 1,511.11 is: 2,084.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,690.29 : 3,711.66 = 1,511.11 : x
  2. Step 2: Convert to fraction form
    2,690.29/3,711.66 = 1,511.11/x
  3. Step 3: Cross multiply
    2,690.29x = 3,711.66 × 1,511.11
  4. Step 4: Simplify right side
    2,690.29x = 5,608,726.54
  5. Step 5: Solve for x
    x = 5,608,726.54/2,690.29
  6. Step 6: Final answer
    x = 2,084.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.