Home / 5,115.27-7,671.28-2,192.79

Finding the Fourth Proportional to 5,115.27, 7,671.28 and 2,192.79

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Solution

The fourth proportional to 5,115.27, 7,671.28 and 2,192.79 is: 3,288.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,115.27 : 7,671.28 = 2,192.79 : x
  2. Step 2: Convert to fraction form
    5,115.27/7,671.28 = 2,192.79/x
  3. Step 3: Cross multiply
    5,115.27x = 7,671.28 × 2,192.79
  4. Step 4: Simplify right side
    5,115.27x = 16,821,506.07
  5. Step 5: Solve for x
    x = 16,821,506.07/5,115.27
  6. Step 6: Final answer
    x = 3,288.49

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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.