Home / 8,191.22-12,289.55-3,259.53

Finding the Fourth Proportional to 8,191.22, 12,289.55 and 3,259.53

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Solution

The fourth proportional to 8,191.22, 12,289.55 and 3,259.53 is: 4,890.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,191.22 : 12,289.55 = 3,259.53 : x
  2. Step 2: Convert to fraction form
    8,191.22/12,289.55 = 3,259.53/x
  3. Step 3: Cross multiply
    8,191.22x = 12,289.55 × 3,259.53
  4. Step 4: Simplify right side
    8,191.22x = 40,058,140.61
  5. Step 5: Solve for x
    x = 40,058,140.61/8,191.22
  6. Step 6: Final answer
    x = 4,890.38

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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.