Home / 7,318.90-10,100.06-3,961.68

Finding the Fourth Proportional to 7,318.90, 10,100.06 and 3,961.68

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Solution

The fourth proportional to 7,318.90, 10,100.06 and 3,961.68 is: 5,467.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,318.90 : 10,100.06 = 3,961.68 : x
  2. Step 2: Convert to fraction form
    7,318.90/10,100.06 = 3,961.68/x
  3. Step 3: Cross multiply
    7,318.90x = 10,100.06 × 3,961.68
  4. Step 4: Simplify right side
    7,318.90x = 40,013,205.70
  5. Step 5: Solve for x
    x = 40,013,205.70/7,318.90
  6. Step 6: Final answer
    x = 5,467.11

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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.