Home / 8,403.28-12,610.20-3,209.68

Finding the Fourth Proportional to 8,403.28, 12,610.20 and 3,209.68

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Solution

The fourth proportional to 8,403.28, 12,610.20 and 3,209.68 is: 4,816.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,403.28 : 12,610.20 = 3,209.68 : x
  2. Step 2: Convert to fraction form
    8,403.28/12,610.20 = 3,209.68/x
  3. Step 3: Cross multiply
    8,403.28x = 12,610.20 × 3,209.68
  4. Step 4: Simplify right side
    8,403.28x = 40,474,706.74
  5. Step 5: Solve for x
    x = 40,474,706.74/8,403.28
  6. Step 6: Final answer
    x = 4,816.54

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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.