Home / 3,121.16-4,675.46-1,479.29

Finding the Fourth Proportional to 3,121.16, 4,675.46 and 1,479.29

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Solution

The fourth proportional to 3,121.16, 4,675.46 and 1,479.29 is: 2,215.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121.16 : 4,675.46 = 1,479.29 : x
  2. Step 2: Convert to fraction form
    3,121.16/4,675.46 = 1,479.29/x
  3. Step 3: Cross multiply
    3,121.16x = 4,675.46 × 1,479.29
  4. Step 4: Simplify right side
    3,121.16x = 6,916,330.45
  5. Step 5: Solve for x
    x = 6,916,330.45/3,121.16
  6. Step 6: Final answer
    x = 2,215.95

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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.