Home / 1,288.62-1,933.56-801.54

Finding the Fourth Proportional to 1,288.62, 1,933.56 and 801.54

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Solution

The fourth proportional to 1,288.62, 1,933.56 and 801.54 is: 1,202.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288.62 : 1,933.56 = 801.54 : x
  2. Step 2: Convert to fraction form
    1,288.62/1,933.56 = 801.54/x
  3. Step 3: Cross multiply
    1,288.62x = 1,933.56 × 801.54
  4. Step 4: Simplify right side
    1,288.62x = 1,549,825.68
  5. Step 5: Solve for x
    x = 1,549,825.68/1,288.62
  6. Step 6: Final answer
    x = 1,202.70

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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.