Home / 3,221.28-4,445.58-1,805.08

Finding the Fourth Proportional to 3,221.28, 4,445.58 and 1,805.08

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Solution

The fourth proportional to 3,221.28, 4,445.58 and 1,805.08 is: 2,491.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,221.28 : 4,445.58 = 1,805.08 : x
  2. Step 2: Convert to fraction form
    3,221.28/4,445.58 = 1,805.08/x
  3. Step 3: Cross multiply
    3,221.28x = 4,445.58 × 1,805.08
  4. Step 4: Simplify right side
    3,221.28x = 8,024,627.55
  5. Step 5: Solve for x
    x = 8,024,627.55/3,221.28
  6. Step 6: Final answer
    x = 2,491.13

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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.