Home / 2,649.09-3,969.31-1,672.05

Finding the Fourth Proportional to 2,649.09, 3,969.31 and 1,672.05

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Solution

The fourth proportional to 2,649.09, 3,969.31 and 1,672.05 is: 2,505.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,649.09 : 3,969.31 = 1,672.05 : x
  2. Step 2: Convert to fraction form
    2,649.09/3,969.31 = 1,672.05/x
  3. Step 3: Cross multiply
    2,649.09x = 3,969.31 × 1,672.05
  4. Step 4: Simplify right side
    2,649.09x = 6,636,884.79
  5. Step 5: Solve for x
    x = 6,636,884.79/2,649.09
  6. Step 6: Final answer
    x = 2,505.35

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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.