Home / 7,015.92-9,681.78-3,872.04

Finding the Fourth Proportional to 7,015.92, 9,681.78 and 3,872.04

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Solution

The fourth proportional to 7,015.92, 9,681.78 and 3,872.04 is: 5,343.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,015.92 : 9,681.78 = 3,872.04 : x
  2. Step 2: Convert to fraction form
    7,015.92/9,681.78 = 3,872.04/x
  3. Step 3: Cross multiply
    7,015.92x = 9,681.78 × 3,872.04
  4. Step 4: Simplify right side
    7,015.92x = 37,488,239.43
  5. Step 5: Solve for x
    x = 37,488,239.43/7,015.92
  6. Step 6: Final answer
    x = 5,343.31

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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.