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Finding the Fourth Proportional to 8,641.08, 11,926.44 and 7,147.44

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Solution

The fourth proportional to 8,641.08, 11,926.44 and 7,147.44 is: 9,864.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,641.08 : 11,926.44 = 7,147.44 : x
  2. Step 2: Convert to fraction form
    8,641.08/11,926.44 = 7,147.44/x
  3. Step 3: Cross multiply
    8,641.08x = 11,926.44 × 7,147.44
  4. Step 4: Simplify right side
    8,641.08x = 85,243,514.31
  5. Step 5: Solve for x
    x = 85,243,514.31/8,641.08
  6. Step 6: Final answer
    x = 9,864.91

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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.