Home / 3,959.40-5,928.84-2,656.92

Finding the Fourth Proportional to 3,959.40, 5,928.84 and 2,656.92

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Solution

The fourth proportional to 3,959.40, 5,928.84 and 2,656.92 is: 3,978.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,959.40 : 5,928.84 = 2,656.92 : x
  2. Step 2: Convert to fraction form
    3,959.40/5,928.84 = 2,656.92/x
  3. Step 3: Cross multiply
    3,959.40x = 5,928.84 × 2,656.92
  4. Step 4: Simplify right side
    3,959.40x = 15,752,453.57
  5. Step 5: Solve for x
    x = 15,752,453.57/3,959.40
  6. Step 6: Final answer
    x = 3,978.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.