Home / 3,221-4,445.16-1,824.20

Finding the Fourth Proportional to 3,221, 4,445.16 and 1,824.20

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Solution

The fourth proportional to 3,221, 4,445.16 and 1,824.20 is: 2,517.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,221 : 4,445.16 = 1,824.20 : x
  2. Step 2: Convert to fraction form
    3,221/4,445.16 = 1,824.20/x
  3. Step 3: Cross multiply
    3,221x = 4,445.16 × 1,824.20
  4. Step 4: Simplify right side
    3,221x = 8,108,860.87
  5. Step 5: Solve for x
    x = 8,108,860.87/3,221
  6. Step 6: Final answer
    x = 2,517.50

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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.