Home / 3,857.50-5,323.38-2,089.11

Finding the Fourth Proportional to 3,857.50, 5,323.38 and 2,089.11

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Solution

The fourth proportional to 3,857.50, 5,323.38 and 2,089.11 is: 2,882.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,857.50 : 5,323.38 = 2,089.11 : x
  2. Step 2: Convert to fraction form
    3,857.50/5,323.38 = 2,089.11/x
  3. Step 3: Cross multiply
    3,857.50x = 5,323.38 × 2,089.11
  4. Step 4: Simplify right side
    3,857.50x = 11,121,115.95
  5. Step 5: Solve for x
    x = 11,121,115.95/3,857.50
  6. Step 6: Final answer
    x = 2,882.99

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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.