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Finding the Fourth Proportional to 8,979.15, 13,468.71 and 2,405.16

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Solution

The fourth proportional to 8,979.15, 13,468.71 and 2,405.16 is: 3,607.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,979.15 : 13,468.71 = 2,405.16 : x
  2. Step 2: Convert to fraction form
    8,979.15/13,468.71 = 2,405.16/x
  3. Step 3: Cross multiply
    8,979.15x = 13,468.71 × 2,405.16
  4. Step 4: Simplify right side
    8,979.15x = 32,394,402.54
  5. Step 5: Solve for x
    x = 32,394,402.54/8,979.15
  6. Step 6: Final answer
    x = 3,607.74

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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.