Home / 3,883.94-5,359.85-2,115.55

Finding the Fourth Proportional to 3,883.94, 5,359.85 and 2,115.55

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Solution

The fourth proportional to 3,883.94, 5,359.85 and 2,115.55 is: 2,919.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,883.94 : 5,359.85 = 2,115.55 : x
  2. Step 2: Convert to fraction form
    3,883.94/5,359.85 = 2,115.55/x
  3. Step 3: Cross multiply
    3,883.94x = 5,359.85 × 2,115.55
  4. Step 4: Simplify right side
    3,883.94x = 11,339,030.67
  5. Step 5: Solve for x
    x = 11,339,030.67/3,883.94
  6. Step 6: Final answer
    x = 2,919.47

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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.