Home / 3,221.14-4,445.65-1,877.20

Finding the Fourth Proportional to 3,221.14, 4,445.65 and 1,877.20

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Solution

The fourth proportional to 3,221.14, 4,445.65 and 1,877.20 is: 2,590.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,221.14 : 4,445.65 = 1,877.20 : x
  2. Step 2: Convert to fraction form
    3,221.14/4,445.65 = 1,877.20/x
  3. Step 3: Cross multiply
    3,221.14x = 4,445.65 × 1,877.20
  4. Step 4: Simplify right side
    3,221.14x = 8,345,377.92
  5. Step 5: Solve for x
    x = 8,345,377.92/3,221.14
  6. Step 6: Final answer
    x = 2,590.81

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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.