Home / 2,649.11-3,972.65-1,260.05

Finding the Fourth Proportional to 2,649.11, 3,972.65 and 1,260.05

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Solution

The fourth proportional to 2,649.11, 3,972.65 and 1,260.05 is: 1,889.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,649.11 : 3,972.65 = 1,260.05 : x
  2. Step 2: Convert to fraction form
    2,649.11/3,972.65 = 1,260.05/x
  3. Step 3: Cross multiply
    2,649.11x = 3,972.65 × 1,260.05
  4. Step 4: Simplify right side
    2,649.11x = 5,005,711.47
  5. Step 5: Solve for x
    x = 5,005,711.47/2,649.11
  6. Step 6: Final answer
    x = 1,889.59

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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.