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Finding the Fourth Proportional to 5,253.81, 7,250.49 and 3,015.78

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Solution

The fourth proportional to 5,253.81, 7,250.49 and 3,015.78 is: 4,161.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,253.81 : 7,250.49 = 3,015.78 : x
  2. Step 2: Convert to fraction form
    5,253.81/7,250.49 = 3,015.78/x
  3. Step 3: Cross multiply
    5,253.81x = 7,250.49 × 3,015.78
  4. Step 4: Simplify right side
    5,253.81x = 21,865,882.73
  5. Step 5: Solve for x
    x = 21,865,882.73/5,253.81
  6. Step 6: Final answer
    x = 4,161.91

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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.