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Finding the Fourth Proportional to 5,843.40, 8,759.90 and 2,144.78

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Solution

The fourth proportional to 5,843.40, 8,759.90 and 2,144.78 is: 3,215.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,843.40 : 8,759.90 = 2,144.78 : x
  2. Step 2: Convert to fraction form
    5,843.40/8,759.90 = 2,144.78/x
  3. Step 3: Cross multiply
    5,843.40x = 8,759.90 × 2,144.78
  4. Step 4: Simplify right side
    5,843.40x = 18,788,014.52
  5. Step 5: Solve for x
    x = 18,788,014.52/5,843.40
  6. Step 6: Final answer
    x = 3,215.25

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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.