Home / 2,868.66-3,958.91-2,159.23

Finding the Fourth Proportional to 2,868.66, 3,958.91 and 2,159.23

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Solution

The fourth proportional to 2,868.66, 3,958.91 and 2,159.23 is: 2,979.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,868.66 : 3,958.91 = 2,159.23 : x
  2. Step 2: Convert to fraction form
    2,868.66/3,958.91 = 2,159.23/x
  3. Step 3: Cross multiply
    2,868.66x = 3,958.91 × 2,159.23
  4. Step 4: Simplify right side
    2,868.66x = 8,548,197.24
  5. Step 5: Solve for x
    x = 8,548,197.24/2,868.66
  6. Step 6: Final answer
    x = 2,979.86

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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.