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Finding the Fourth Proportional to 7,247.75, 10,001.90 and 3,935.75

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Solution

The fourth proportional to 7,247.75, 10,001.90 and 3,935.75 is: 5,431.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,247.75 : 10,001.90 = 3,935.75 : x
  2. Step 2: Convert to fraction form
    7,247.75/10,001.90 = 3,935.75/x
  3. Step 3: Cross multiply
    7,247.75x = 10,001.90 × 3,935.75
  4. Step 4: Simplify right side
    7,247.75x = 39,364,958.25
  5. Step 5: Solve for x
    x = 39,364,958.25/7,247.75
  6. Step 6: Final answer
    x = 5,431.34

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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.