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Finding the Fourth Proportional to 7,969.86, 11,952.36 and 2,125.71

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Solution

The fourth proportional to 7,969.86, 11,952.36 and 2,125.71 is: 3,187.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,969.86 : 11,952.36 = 2,125.71 : x
  2. Step 2: Convert to fraction form
    7,969.86/11,952.36 = 2,125.71/x
  3. Step 3: Cross multiply
    7,969.86x = 11,952.36 × 2,125.71
  4. Step 4: Simplify right side
    7,969.86x = 25,407,251.18
  5. Step 5: Solve for x
    x = 25,407,251.18/7,969.86
  6. Step 6: Final answer
    x = 3,187.92

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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.