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Finding the Fourth Proportional to 6,661.26, 9,992.43 and 3,888.22

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Solution

The fourth proportional to 6,661.26, 9,992.43 and 3,888.22 is: 5,832.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,661.26 : 9,992.43 = 3,888.22 : x
  2. Step 2: Convert to fraction form
    6,661.26/9,992.43 = 3,888.22/x
  3. Step 3: Cross multiply
    6,661.26x = 9,992.43 × 3,888.22
  4. Step 4: Simplify right side
    6,661.26x = 38,852,766.17
  5. Step 5: Solve for x
    x = 38,852,766.17/6,661.26
  6. Step 6: Final answer
    x = 5,832.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.