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Finding the Fourth Proportional to 8,779.10, 13,169.32 and 2,935.72

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Solution

The fourth proportional to 8,779.10, 13,169.32 and 2,935.72 is: 4,403.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,779.10 : 13,169.32 = 2,935.72 : x
  2. Step 2: Convert to fraction form
    8,779.10/13,169.32 = 2,935.72/x
  3. Step 3: Cross multiply
    8,779.10x = 13,169.32 × 2,935.72
  4. Step 4: Simplify right side
    8,779.10x = 38,661,436.11
  5. Step 5: Solve for x
    x = 38,661,436.11/8,779.10
  6. Step 6: Final answer
    x = 4,403.80

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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.