Home / 5,481.40-8,224.80-3,143.20

Finding the Fourth Proportional to 5,481.40, 8,224.80 and 3,143.20

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Solution

The fourth proportional to 5,481.40, 8,224.80 and 3,143.20 is: 4,716.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,481.40 : 8,224.80 = 3,143.20 : x
  2. Step 2: Convert to fraction form
    5,481.40/8,224.80 = 3,143.20/x
  3. Step 3: Cross multiply
    5,481.40x = 8,224.80 × 3,143.20
  4. Step 4: Simplify right side
    5,481.40x = 25,852,191.36
  5. Step 5: Solve for x
    x = 25,852,191.36/5,481.40
  6. Step 6: Final answer
    x = 4,716.35

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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.