Home / 4,081.28-6,121.80-1,307.84

Finding the Fourth Proportional to 4,081.28, 6,121.80 and 1,307.84

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Solution

The fourth proportional to 4,081.28, 6,121.80 and 1,307.84 is: 1,961.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,081.28 : 6,121.80 = 1,307.84 : x
  2. Step 2: Convert to fraction form
    4,081.28/6,121.80 = 1,307.84/x
  3. Step 3: Cross multiply
    4,081.28x = 6,121.80 × 1,307.84
  4. Step 4: Simplify right side
    4,081.28x = 8,006,304.30
  5. Step 5: Solve for x
    x = 8,006,304.30/4,081.28
  6. Step 6: Final answer
    x = 1,961.72

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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.