Home / 5,148.12-7,715.46-2,072.28

Finding the Fourth Proportional to 5,148.12, 7,715.46 and 2,072.28

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Solution

The fourth proportional to 5,148.12, 7,715.46 and 2,072.28 is: 3,105.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,148.12 : 7,715.46 = 2,072.28 : x
  2. Step 2: Convert to fraction form
    5,148.12/7,715.46 = 2,072.28/x
  3. Step 3: Cross multiply
    5,148.12x = 7,715.46 × 2,072.28
  4. Step 4: Simplify right side
    5,148.12x = 15,988,593.45
  5. Step 5: Solve for x
    x = 15,988,593.45/5,148.12
  6. Step 6: Final answer
    x = 3,105.71

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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.