Home / 3,221.43-4,445.25-1,805.00

Finding the Fourth Proportional to 3,221.43, 4,445.25 and 1,805.00

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Solution

The fourth proportional to 3,221.43, 4,445.25 and 1,805.00 is: 2,490.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,221.43 : 4,445.25 = 1,805.00 : x
  2. Step 2: Convert to fraction form
    3,221.43/4,445.25 = 1,805.00/x
  3. Step 3: Cross multiply
    3,221.43x = 4,445.25 × 1,805.00
  4. Step 4: Simplify right side
    3,221.43x = 8,023,682.41
  5. Step 5: Solve for x
    x = 8,023,682.41/3,221.43
  6. Step 6: Final answer
    x = 2,490.72

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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.