Home / 7,020.31-9,687.99-3,876.48

Finding the Fourth Proportional to 7,020.31, 9,687.99 and 3,876.48

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Solution

The fourth proportional to 7,020.31, 9,687.99 and 3,876.48 is: 5,349.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,020.31 : 9,687.99 = 3,876.48 : x
  2. Step 2: Convert to fraction form
    7,020.31/9,687.99 = 3,876.48/x
  3. Step 3: Cross multiply
    7,020.31x = 9,687.99 × 3,876.48
  4. Step 4: Simplify right side
    7,020.31x = 37,555,299.48
  5. Step 5: Solve for x
    x = 37,555,299.48/7,020.31
  6. Step 6: Final answer
    x = 5,349.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.