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Finding the Fourth Proportional to 10,779, 16,169.44 and 2,987.88

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Solution

The fourth proportional to 10,779, 16,169.44 and 2,987.88 is: 4,482.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,779 : 16,169.44 = 2,987.88 : x
  2. Step 2: Convert to fraction form
    10,779/16,169.44 = 2,987.88/x
  3. Step 3: Cross multiply
    10,779x = 16,169.44 × 2,987.88
  4. Step 4: Simplify right side
    10,779x = 48,312,346.39
  5. Step 5: Solve for x
    x = 48,312,346.39/10,779
  6. Step 6: Final answer
    x = 4,482.08

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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.