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Finding the Fourth Proportional to 8,398.89, 11,595.15 and 6,694.38

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Solution

The fourth proportional to 8,398.89, 11,595.15 and 6,694.38 is: 9,241.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,398.89 : 11,595.15 = 6,694.38 : x
  2. Step 2: Convert to fraction form
    8,398.89/11,595.15 = 6,694.38/x
  3. Step 3: Cross multiply
    8,398.89x = 11,595.15 × 6,694.38
  4. Step 4: Simplify right side
    8,398.89x = 77,622,340.26
  5. Step 5: Solve for x
    x = 77,622,340.26/8,398.89
  6. Step 6: Final answer
    x = 9,241.98

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1.5x scale

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.