Home / 3,664.40-5,491.37-2,672.78

Finding the Fourth Proportional to 3,664.40, 5,491.37 and 2,672.78

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Solution

The fourth proportional to 3,664.40, 5,491.37 and 2,672.78 is: 4,005.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,664.40 : 5,491.37 = 2,672.78 : x
  2. Step 2: Convert to fraction form
    3,664.40/5,491.37 = 2,672.78/x
  3. Step 3: Cross multiply
    3,664.40x = 5,491.37 × 2,672.78
  4. Step 4: Simplify right side
    3,664.40x = 14,677,203.13
  5. Step 5: Solve for x
    x = 14,677,203.13/3,664.40
  6. Step 6: Final answer
    x = 4,005.36

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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.