Home / 3,223.85-4,449.71-1,981.13

Finding the Fourth Proportional to 3,223.85, 4,449.71 and 1,981.13

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Solution

The fourth proportional to 3,223.85, 4,449.71 and 1,981.13 is: 2,734.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,223.85 : 4,449.71 = 1,981.13 : x
  2. Step 2: Convert to fraction form
    3,223.85/4,449.71 = 1,981.13/x
  3. Step 3: Cross multiply
    3,223.85x = 4,449.71 × 1,981.13
  4. Step 4: Simplify right side
    3,223.85x = 8,815,453.97
  5. Step 5: Solve for x
    x = 8,815,453.97/3,223.85
  6. Step 6: Final answer
    x = 2,734.45

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1.5x scale

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.