Home / 10,778.46-16,167.66-2,987.28

Finding the Fourth Proportional to 10,778.46, 16,167.66 and 2,987.28

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Solution

The fourth proportional to 10,778.46, 16,167.66 and 2,987.28 is: 4,480.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,778.46 : 16,167.66 = 2,987.28 : x
  2. Step 2: Convert to fraction form
    10,778.46/16,167.66 = 2,987.28/x
  3. Step 3: Cross multiply
    10,778.46x = 16,167.66 × 2,987.28
  4. Step 4: Simplify right side
    10,778.46x = 48,297,327.36
  5. Step 5: Solve for x
    x = 48,297,327.36/10,778.46
  6. Step 6: Final answer
    x = 4,480.91

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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.