Home / 3,857.60-5,323.49-2,089.21

Finding the Fourth Proportional to 3,857.60, 5,323.49 and 2,089.21

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Solution

The fourth proportional to 3,857.60, 5,323.49 and 2,089.21 is: 2,883.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,857.60 : 5,323.49 = 2,089.21 : x
  2. Step 2: Convert to fraction form
    3,857.60/5,323.49 = 2,089.21/x
  3. Step 3: Cross multiply
    3,857.60x = 5,323.49 × 2,089.21
  4. Step 4: Simplify right side
    3,857.60x = 11,121,882.60
  5. Step 5: Solve for x
    x = 11,121,882.60/3,857.60
  6. Step 6: Final answer
    x = 2,883.11

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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.