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Finding the Fourth Proportional to 8,979.10, 13,468.68 and 3,135.71

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Solution

The fourth proportional to 8,979.10, 13,468.68 and 3,135.71 is: 4,703.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,979.10 : 13,468.68 = 3,135.71 : x
  2. Step 2: Convert to fraction form
    8,979.10/13,468.68 = 3,135.71/x
  3. Step 3: Cross multiply
    8,979.10x = 13,468.68 × 3,135.71
  4. Step 4: Simplify right side
    8,979.10x = 42,233,908.23
  5. Step 5: Solve for x
    x = 42,233,908.23/8,979.10
  6. Step 6: Final answer
    x = 4,703.58

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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.