Home / 2,649.91-3,974.36-800.60

Finding the Fourth Proportional to 2,649.91, 3,974.36 and 800.60

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Solution

The fourth proportional to 2,649.91, 3,974.36 and 800.60 is: 1,200.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,649.91 : 3,974.36 = 800.60 : x
  2. Step 2: Convert to fraction form
    2,649.91/3,974.36 = 800.60/x
  3. Step 3: Cross multiply
    2,649.91x = 3,974.36 × 800.60
  4. Step 4: Simplify right side
    2,649.91x = 3,181,848.74
  5. Step 5: Solve for x
    x = 3,181,848.74/2,649.91
  6. Step 6: Final answer
    x = 1,200.74

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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.