Home / 2,868.40-3,958.74-1,876.56

Finding the Fourth Proportional to 2,868.40, 3,958.74 and 1,876.56

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Solution

The fourth proportional to 2,868.40, 3,958.74 and 1,876.56 is: 2,589.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,868.40 : 3,958.74 = 1,876.56 : x
  2. Step 2: Convert to fraction form
    2,868.40/3,958.74 = 1,876.56/x
  3. Step 3: Cross multiply
    2,868.40x = 3,958.74 × 1,876.56
  4. Step 4: Simplify right side
    2,868.40x = 7,428,813.13
  5. Step 5: Solve for x
    x = 7,428,813.13/2,868.40
  6. Step 6: Final answer
    x = 2,589.88

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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.