Home / 2,868.25-3,958.12-1,672.81

Finding the Fourth Proportional to 2,868.25, 3,958.12 and 1,672.81

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Solution

The fourth proportional to 2,868.25, 3,958.12 and 1,672.81 is: 2,308.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,868.25 : 3,958.12 = 1,672.81 : x
  2. Step 2: Convert to fraction form
    2,868.25/3,958.12 = 1,672.81/x
  3. Step 3: Cross multiply
    2,868.25x = 3,958.12 × 1,672.81
  4. Step 4: Simplify right side
    2,868.25x = 6,621,182.72
  5. Step 5: Solve for x
    x = 6,621,182.72/2,868.25
  6. Step 6: Final answer
    x = 2,308.44

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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.