Home / 4,121.16-6,178.80-1,928.76

Finding the Fourth Proportional to 4,121.16, 6,178.80 and 1,928.76

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Solution

The fourth proportional to 4,121.16, 6,178.80 and 1,928.76 is: 2,891.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,121.16 : 6,178.80 = 1,928.76 : x
  2. Step 2: Convert to fraction form
    4,121.16/6,178.80 = 1,928.76/x
  3. Step 3: Cross multiply
    4,121.16x = 6,178.80 × 1,928.76
  4. Step 4: Simplify right side
    4,121.16x = 11,917,422.29
  5. Step 5: Solve for x
    x = 11,917,422.29/4,121.16
  6. Step 6: Final answer
    x = 2,891.76

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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.