Home / 3,221.13-4,445.91-2,159.04

Finding the Fourth Proportional to 3,221.13, 4,445.91 and 2,159.04

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Solution

The fourth proportional to 3,221.13, 4,445.91 and 2,159.04 is: 2,979.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,221.13 : 4,445.91 = 2,159.04 : x
  2. Step 2: Convert to fraction form
    3,221.13/4,445.91 = 2,159.04/x
  3. Step 3: Cross multiply
    3,221.13x = 4,445.91 × 2,159.04
  4. Step 4: Simplify right side
    3,221.13x = 9,598,897.53
  5. Step 5: Solve for x
    x = 9,598,897.53/3,221.13
  6. Step 6: Final answer
    x = 2,979.98

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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.