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Finding the Fourth Proportional to 7,169.13, 9,893.53 and 3,982.72

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Solution

The fourth proportional to 7,169.13, 9,893.53 and 3,982.72 is: 5,496.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,169.13 : 9,893.53 = 3,982.72 : x
  2. Step 2: Convert to fraction form
    7,169.13/9,893.53 = 3,982.72/x
  3. Step 3: Cross multiply
    7,169.13x = 9,893.53 × 3,982.72
  4. Step 4: Simplify right side
    7,169.13x = 39,403,140.05
  5. Step 5: Solve for x
    x = 39,403,140.05/7,169.13
  6. Step 6: Final answer
    x = 5,496.22

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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.