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Finding the Fourth Proportional to 6,641.12, 9,164.62 and 3,656.92

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Solution

The fourth proportional to 6,641.12, 9,164.62 and 3,656.92 is: 5,046.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,641.12 : 9,164.62 = 3,656.92 : x
  2. Step 2: Convert to fraction form
    6,641.12/9,164.62 = 3,656.92/x
  3. Step 3: Cross multiply
    6,641.12x = 9,164.62 × 3,656.92
  4. Step 4: Simplify right side
    6,641.12x = 33,514,282.17
  5. Step 5: Solve for x
    x = 33,514,282.17/6,641.12
  6. Step 6: Final answer
    x = 5,046.48

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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.