Home / 5,481.85-8,209.78-3,143.13

Finding the Fourth Proportional to 5,481.85, 8,209.78 and 3,143.13

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Solution

The fourth proportional to 5,481.85, 8,209.78 and 3,143.13 is: 4,707.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,481.85 : 8,209.78 = 3,143.13 : x
  2. Step 2: Convert to fraction form
    5,481.85/8,209.78 = 3,143.13/x
  3. Step 3: Cross multiply
    5,481.85x = 8,209.78 × 3,143.13
  4. Step 4: Simplify right side
    5,481.85x = 25,804,405.81
  5. Step 5: Solve for x
    x = 25,804,405.81/5,481.85
  6. Step 6: Final answer
    x = 4,707.24

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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.