Home / 3,221.74-4,445.96-1,805.44

Finding the Fourth Proportional to 3,221.74, 4,445.96 and 1,805.44

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Solution

The fourth proportional to 3,221.74, 4,445.96 and 1,805.44 is: 2,491.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,221.74 : 4,445.96 = 1,805.44 : x
  2. Step 2: Convert to fraction form
    3,221.74/4,445.96 = 1,805.44/x
  3. Step 3: Cross multiply
    3,221.74x = 4,445.96 × 1,805.44
  4. Step 4: Simplify right side
    3,221.74x = 8,026,914.02
  5. Step 5: Solve for x
    x = 8,026,914.02/3,221.74
  6. Step 6: Final answer
    x = 2,491.48

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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.