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Finding the Fourth Proportional to 9,488.78, 13,092.79 and 6,664.78

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Solution

The fourth proportional to 9,488.78, 13,092.79 and 6,664.78 is: 9,196.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,488.78 : 13,092.79 = 6,664.78 : x
  2. Step 2: Convert to fraction form
    9,488.78/13,092.79 = 6,664.78/x
  3. Step 3: Cross multiply
    9,488.78x = 13,092.79 × 6,664.78
  4. Step 4: Simplify right side
    9,488.78x = 87,260,577.14
  5. Step 5: Solve for x
    x = 87,260,577.14/9,488.78
  6. Step 6: Final answer
    x = 9,196.19

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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.