Home / 10,778.88-16,168.61-2,987.76

Finding the Fourth Proportional to 10,778.88, 16,168.61 and 2,987.76

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Solution

The fourth proportional to 10,778.88, 16,168.61 and 2,987.76 is: 4,481.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,778.88 : 16,168.61 = 2,987.76 : x
  2. Step 2: Convert to fraction form
    10,778.88/16,168.61 = 2,987.76/x
  3. Step 3: Cross multiply
    10,778.88x = 16,168.61 × 2,987.76
  4. Step 4: Simplify right side
    10,778.88x = 48,307,926.21
  5. Step 5: Solve for x
    x = 48,307,926.21/10,778.88
  6. Step 6: Final answer
    x = 4,481.72

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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.