Home / 8,780.28-13,168.44-2,540.28

Finding the Fourth Proportional to 8,780.28, 13,168.44 and 2,540.28

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Solution

The fourth proportional to 8,780.28, 13,168.44 and 2,540.28 is: 3,809.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,780.28 : 13,168.44 = 2,540.28 : x
  2. Step 2: Convert to fraction form
    8,780.28/13,168.44 = 2,540.28/x
  3. Step 3: Cross multiply
    8,780.28x = 13,168.44 × 2,540.28
  4. Step 4: Simplify right side
    8,780.28x = 33,451,524.76
  5. Step 5: Solve for x
    x = 33,451,524.76/8,780.28
  6. Step 6: Final answer
    x = 3,809.85

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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.