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Finding the Fourth Proportional to 8,779.99, 13,175.18 and 3,237.21

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Solution

The fourth proportional to 8,779.99, 13,175.18 and 3,237.21 is: 4,857.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,779.99 : 13,175.18 = 3,237.21 : x
  2. Step 2: Convert to fraction form
    8,779.99/13,175.18 = 3,237.21/x
  3. Step 3: Cross multiply
    8,779.99x = 13,175.18 × 3,237.21
  4. Step 4: Simplify right side
    8,779.99x = 42,650,824.45
  5. Step 5: Solve for x
    x = 42,650,824.45/8,779.99
  6. Step 6: Final answer
    x = 4,857.73

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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.