Home / 3,884.06-5,359.98-2,115.68

Finding the Fourth Proportional to 3,884.06, 5,359.98 and 2,115.68

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Solution

The fourth proportional to 3,884.06, 5,359.98 and 2,115.68 is: 2,919.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,884.06 : 5,359.98 = 2,115.68 : x
  2. Step 2: Convert to fraction form
    3,884.06/5,359.98 = 2,115.68/x
  3. Step 3: Cross multiply
    3,884.06x = 5,359.98 × 2,115.68
  4. Step 4: Simplify right side
    3,884.06x = 11,340,002.49
  5. Step 5: Solve for x
    x = 11,340,002.49/3,884.06
  6. Step 6: Final answer
    x = 2,919.63

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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.