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Finding the Fourth Proportional to 8,688.67, 13,032.39 and 4,979.27

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Solution

The fourth proportional to 8,688.67, 13,032.39 and 4,979.27 is: 7,468.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,688.67 : 13,032.39 = 4,979.27 : x
  2. Step 2: Convert to fraction form
    8,688.67/13,032.39 = 4,979.27/x
  3. Step 3: Cross multiply
    8,688.67x = 13,032.39 × 4,979.27
  4. Step 4: Simplify right side
    8,688.67x = 64,891,839.81
  5. Step 5: Solve for x
    x = 64,891,839.81/8,688.67
  6. Step 6: Final answer
    x = 7,468.56

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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.