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Finding the Fourth Proportional to 7,257.38, 10,015.18 and 3,945.38

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Solution

The fourth proportional to 7,257.38, 10,015.18 and 3,945.38 is: 5,444.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,257.38 : 10,015.18 = 3,945.38 : x
  2. Step 2: Convert to fraction form
    7,257.38/10,015.18 = 3,945.38/x
  3. Step 3: Cross multiply
    7,257.38x = 10,015.18 × 3,945.38
  4. Step 4: Simplify right side
    7,257.38x = 39,513,630.93
  5. Step 5: Solve for x
    x = 39,513,630.93/7,257.38
  6. Step 6: Final answer
    x = 5,444.62

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1.5x scale

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.