Home / 1,222.80-1,818.61-1,192.04

Finding the Fourth Proportional to 1,222.80, 1,818.61 and 1,192.04

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Solution

The fourth proportional to 1,222.80, 1,818.61 and 1,192.04 is: 1,772.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222.80 : 1,818.61 = 1,192.04 : x
  2. Step 2: Convert to fraction form
    1,222.80/1,818.61 = 1,192.04/x
  3. Step 3: Cross multiply
    1,222.80x = 1,818.61 × 1,192.04
  4. Step 4: Simplify right side
    1,222.80x = 2,167,855.86
  5. Step 5: Solve for x
    x = 2,167,855.86/1,222.80
  6. Step 6: Final answer
    x = 1,772.86

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.