Home / 2,116.11-2,920.14-1,231.95

Finding the Fourth Proportional to 2,116.11, 2,920.14 and 1,231.95

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Solution

The fourth proportional to 2,116.11, 2,920.14 and 1,231.95 is: 1,700.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,116.11 : 2,920.14 = 1,231.95 : x
  2. Step 2: Convert to fraction form
    2,116.11/2,920.14 = 1,231.95/x
  3. Step 3: Cross multiply
    2,116.11x = 2,920.14 × 1,231.95
  4. Step 4: Simplify right side
    2,116.11x = 3,597,466.47
  5. Step 5: Solve for x
    x = 3,597,466.47/2,116.11
  6. Step 6: Final answer
    x = 1,700.04

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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.