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Finding the Fourth Proportional to 3,221.74, 4,854.56 and 2,649.56

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Solution

The fourth proportional to 3,221.74, 4,854.56 and 2,649.56 is: 3,992.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,221.74 : 4,854.56 = 2,649.56 : x
  2. Step 2: Convert to fraction form
    3,221.74/4,854.56 = 2,649.56/x
  3. Step 3: Cross multiply
    3,221.74x = 4,854.56 × 2,649.56
  4. Step 4: Simplify right side
    3,221.74x = 12,862,445.23
  5. Step 5: Solve for x
    x = 12,862,445.23/3,221.74
  6. Step 6: Final answer
    x = 3,992.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.