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Finding the Fourth Proportional to 4,098.40, 6,143.40 and 2,015.20

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Solution

The fourth proportional to 4,098.40, 6,143.40 and 2,015.20 is: 3,020.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,098.40 : 6,143.40 = 2,015.20 : x
  2. Step 2: Convert to fraction form
    4,098.40/6,143.40 = 2,015.20/x
  3. Step 3: Cross multiply
    4,098.40x = 6,143.40 × 2,015.20
  4. Step 4: Simplify right side
    4,098.40x = 12,380,179.68
  5. Step 5: Solve for x
    x = 12,380,179.68/4,098.40
  6. Step 6: Final answer
    x = 3,020.73

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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.