Home / 2,238.40-3,352.80-1,995.20

Finding the Fourth Proportional to 2,238.40, 3,352.80 and 1,995.20

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Solution

The fourth proportional to 2,238.40, 3,352.80 and 1,995.20 is: 2,988.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,238.40 : 3,352.80 = 1,995.20 : x
  2. Step 2: Convert to fraction form
    2,238.40/3,352.80 = 1,995.20/x
  3. Step 3: Cross multiply
    2,238.40x = 3,352.80 × 1,995.20
  4. Step 4: Simplify right side
    2,238.40x = 6,689,506.56
  5. Step 5: Solve for x
    x = 6,689,506.56/2,238.40
  6. Step 6: Final answer
    x = 2,988.52

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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.