Home / 7,231.88-10,838.70-3,938.12

Finding the Fourth Proportional to 7,231.88, 10,838.70 and 3,938.12

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Solution

The fourth proportional to 7,231.88, 10,838.70 and 3,938.12 is: 5,902.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,231.88 : 10,838.70 = 3,938.12 : x
  2. Step 2: Convert to fraction form
    7,231.88/10,838.70 = 3,938.12/x
  3. Step 3: Cross multiply
    7,231.88x = 10,838.70 × 3,938.12
  4. Step 4: Simplify right side
    7,231.88x = 42,684,101.24
  5. Step 5: Solve for x
    x = 42,684,101.24/7,231.88
  6. Step 6: Final answer
    x = 5,902.21

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1.5x scale

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.