Home / 1,328.80-1,997.52-1,192.48

Finding the Fourth Proportional to 1,328.80, 1,997.52 and 1,192.48

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Solution

The fourth proportional to 1,328.80, 1,997.52 and 1,192.48 is: 1,792.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328.80 : 1,997.52 = 1,192.48 : x
  2. Step 2: Convert to fraction form
    1,328.80/1,997.52 = 1,192.48/x
  3. Step 3: Cross multiply
    1,328.80x = 1,997.52 × 1,192.48
  4. Step 4: Simplify right side
    1,328.80x = 2,382,002.65
  5. Step 5: Solve for x
    x = 2,382,002.65/1,328.80
  6. Step 6: Final answer
    x = 1,792.60

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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.