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Finding the Fourth Proportional to 8,606.79, 11,878.16 and 5,249.79

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Solution

The fourth proportional to 8,606.79, 11,878.16 and 5,249.79 is: 7,245.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,606.79 : 11,878.16 = 5,249.79 : x
  2. Step 2: Convert to fraction form
    8,606.79/11,878.16 = 5,249.79/x
  3. Step 3: Cross multiply
    8,606.79x = 11,878.16 × 5,249.79
  4. Step 4: Simplify right side
    8,606.79x = 62,357,819.34
  5. Step 5: Solve for x
    x = 62,357,819.34/8,606.79
  6. Step 6: Final answer
    x = 7,245.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.