Home / 1,265.70-1,902.60-1,192.80

Finding the Fourth Proportional to 1,265.70, 1,902.60 and 1,192.80

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Solution

The fourth proportional to 1,265.70, 1,902.60 and 1,192.80 is: 1,793.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,265.70 : 1,902.60 = 1,192.80 : x
  2. Step 2: Convert to fraction form
    1,265.70/1,902.60 = 1,192.80/x
  3. Step 3: Cross multiply
    1,265.70x = 1,902.60 × 1,192.80
  4. Step 4: Simplify right side
    1,265.70x = 2,269,421.28
  5. Step 5: Solve for x
    x = 2,269,421.28/1,265.70
  6. Step 6: Final answer
    x = 1,793.02

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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.