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Finding the Fourth Proportional to 9,112.11, 13,665.11 and 3,488.47

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Solution

The fourth proportional to 9,112.11, 13,665.11 and 3,488.47 is: 5,231.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,112.11 : 13,665.11 = 3,488.47 : x
  2. Step 2: Convert to fraction form
    9,112.11/13,665.11 = 3,488.47/x
  3. Step 3: Cross multiply
    9,112.11x = 13,665.11 × 3,488.47
  4. Step 4: Simplify right side
    9,112.11x = 47,670,326.28
  5. Step 5: Solve for x
    x = 47,670,326.28/9,112.11
  6. Step 6: Final answer
    x = 5,231.54

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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.