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Finding the Fourth Proportional to 2,671.80, 4,002.90 and 2,182.20

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Solution

The fourth proportional to 2,671.80, 4,002.90 and 2,182.20 is: 3,269.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,671.80 : 4,002.90 = 2,182.20 : x
  2. Step 2: Convert to fraction form
    2,671.80/4,002.90 = 2,182.20/x
  3. Step 3: Cross multiply
    2,671.80x = 4,002.90 × 2,182.20
  4. Step 4: Simplify right side
    2,671.80x = 8,735,128.38
  5. Step 5: Solve for x
    x = 8,735,128.38/2,671.80
  6. Step 6: Final answer
    x = 3,269.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.