Home / 7,947.81-11,921.17-3,266.61

Finding the Fourth Proportional to 7,947.81, 11,921.17 and 3,266.61

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Solution

The fourth proportional to 7,947.81, 11,921.17 and 3,266.61 is: 4,899.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,947.81 : 11,921.17 = 3,266.61 : x
  2. Step 2: Convert to fraction form
    7,947.81/11,921.17 = 3,266.61/x
  3. Step 3: Cross multiply
    7,947.81x = 11,921.17 × 3,266.61
  4. Step 4: Simplify right side
    7,947.81x = 38,941,813.13
  5. Step 5: Solve for x
    x = 38,941,813.13/7,947.81
  6. Step 6: Final answer
    x = 4,899.69

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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.