Home / 3,357.72-5,036.31-2,121.53

Finding the Fourth Proportional to 3,357.72, 5,036.31 and 2,121.53

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Solution

The fourth proportional to 3,357.72, 5,036.31 and 2,121.53 is: 3,182.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,357.72 : 5,036.31 = 2,121.53 : x
  2. Step 2: Convert to fraction form
    3,357.72/5,036.31 = 2,121.53/x
  3. Step 3: Cross multiply
    3,357.72x = 5,036.31 × 2,121.53
  4. Step 4: Simplify right side
    3,357.72x = 10,684,657.57
  5. Step 5: Solve for x
    x = 10,684,657.57/3,357.72
  6. Step 6: Final answer
    x = 3,182.12

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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.