Home / 2,121.32-3,182.76-1,244.57

Finding the Fourth Proportional to 2,121.32, 3,182.76 and 1,244.57

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Solution

The fourth proportional to 2,121.32, 3,182.76 and 1,244.57 is: 1,867.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,121.32 : 3,182.76 = 1,244.57 : x
  2. Step 2: Convert to fraction form
    2,121.32/3,182.76 = 1,244.57/x
  3. Step 3: Cross multiply
    2,121.32x = 3,182.76 × 1,244.57
  4. Step 4: Simplify right side
    2,121.32x = 3,961,151.70
  5. Step 5: Solve for x
    x = 3,961,151.70/2,121.32
  6. Step 6: Final answer
    x = 1,867.30

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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.