Home / 10,422.89-15,634.36-2,631.70

Finding the Fourth Proportional to 10,422.89, 15,634.36 and 2,631.70

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Solution

The fourth proportional to 10,422.89, 15,634.36 and 2,631.70 is: 3,947.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,422.89 : 15,634.36 = 2,631.70 : x
  2. Step 2: Convert to fraction form
    10,422.89/15,634.36 = 2,631.70/x
  3. Step 3: Cross multiply
    10,422.89x = 15,634.36 × 2,631.70
  4. Step 4: Simplify right side
    10,422.89x = 41,144,945.21
  5. Step 5: Solve for x
    x = 41,144,945.21/10,422.89
  6. Step 6: Final answer
    x = 3,947.56

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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.