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Finding the Fourth Proportional to 2,149.30, 3,219.63 and 2,005.30

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Solution

The fourth proportional to 2,149.30, 3,219.63 and 2,005.30 is: 3,003.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,149.30 : 3,219.63 = 2,005.30 : x
  2. Step 2: Convert to fraction form
    2,149.30/3,219.63 = 2,005.30/x
  3. Step 3: Cross multiply
    2,149.30x = 3,219.63 × 2,005.30
  4. Step 4: Simplify right side
    2,149.30x = 6,456,324.04
  5. Step 5: Solve for x
    x = 6,456,324.04/2,149.30
  6. Step 6: Final answer
    x = 3,003.92

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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.