Home / 8,780.55-13,170.85-3,231.50

Finding the Fourth Proportional to 8,780.55, 13,170.85 and 3,231.50

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Solution

The fourth proportional to 8,780.55, 13,170.85 and 3,231.50 is: 4,847.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,780.55 : 13,170.85 = 3,231.50 : x
  2. Step 2: Convert to fraction form
    8,780.55/13,170.85 = 3,231.50/x
  3. Step 3: Cross multiply
    8,780.55x = 13,170.85 × 3,231.50
  4. Step 4: Simplify right side
    8,780.55x = 42,561,546.02
  5. Step 5: Solve for x
    x = 42,561,546.02/8,780.55
  6. Step 6: Final answer
    x = 4,847.25

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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.