Home / 2,649.11-3,975.19-984.39

Finding the Fourth Proportional to 2,649.11, 3,975.19 and 984.39

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Solution

The fourth proportional to 2,649.11, 3,975.19 and 984.39 is: 1,477.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,649.11 : 3,975.19 = 984.39 : x
  2. Step 2: Convert to fraction form
    2,649.11/3,975.19 = 984.39/x
  3. Step 3: Cross multiply
    2,649.11x = 3,975.19 × 984.39
  4. Step 4: Simplify right side
    2,649.11x = 3,913,132.36
  5. Step 5: Solve for x
    x = 3,913,132.36/2,649.11
  6. Step 6: Final answer
    x = 1,477.15

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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.