Home / 2,883.57-3,979.85-2,261.49

Finding the Fourth Proportional to 2,883.57, 3,979.85 and 2,261.49

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Solution

The fourth proportional to 2,883.57, 3,979.85 and 2,261.49 is: 3,121.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,883.57 : 3,979.85 = 2,261.49 : x
  2. Step 2: Convert to fraction form
    2,883.57/3,979.85 = 2,261.49/x
  3. Step 3: Cross multiply
    2,883.57x = 3,979.85 × 2,261.49
  4. Step 4: Simplify right side
    2,883.57x = 9,000,390.98
  5. Step 5: Solve for x
    x = 9,000,390.98/2,883.57
  6. Step 6: Final answer
    x = 3,121.27

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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.