Home / 3,221.48-4,445.10-1,805.06

Finding the Fourth Proportional to 3,221.48, 4,445.10 and 1,805.06

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Solution

The fourth proportional to 3,221.48, 4,445.10 and 1,805.06 is: 2,490.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,221.48 : 4,445.10 = 1,805.06 : x
  2. Step 2: Convert to fraction form
    3,221.48/4,445.10 = 1,805.06/x
  3. Step 3: Cross multiply
    3,221.48x = 4,445.10 × 1,805.06
  4. Step 4: Simplify right side
    3,221.48x = 8,023,672.21
  5. Step 5: Solve for x
    x = 8,023,672.21/3,221.48
  6. Step 6: Final answer
    x = 2,490.68

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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.