Home / 3,121.32-4,307.52-1,724.04

Finding the Fourth Proportional to 3,121.32, 4,307.52 and 1,724.04

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Solution

The fourth proportional to 3,121.32, 4,307.52 and 1,724.04 is: 2,379.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121.32 : 4,307.52 = 1,724.04 : x
  2. Step 2: Convert to fraction form
    3,121.32/4,307.52 = 1,724.04/x
  3. Step 3: Cross multiply
    3,121.32x = 4,307.52 × 1,724.04
  4. Step 4: Simplify right side
    3,121.32x = 7,426,336.78
  5. Step 5: Solve for x
    x = 7,426,336.78/3,121.32
  6. Step 6: Final answer
    x = 2,379.23

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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.