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Finding the Fourth Proportional to 6,641.08, 9,164.72 and 3,988.53

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Solution

The fourth proportional to 6,641.08, 9,164.72 and 3,988.53 is: 5,504.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,641.08 : 9,164.72 = 3,988.53 : x
  2. Step 2: Convert to fraction form
    6,641.08/9,164.72 = 3,988.53/x
  3. Step 3: Cross multiply
    6,641.08x = 9,164.72 × 3,988.53
  4. Step 4: Simplify right side
    6,641.08x = 36,553,773.60
  5. Step 5: Solve for x
    x = 36,553,773.60/6,641.08
  6. Step 6: Final answer
    x = 5,504.19

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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.