Home / 3,240-4,467.36-2,649.28

Finding the Fourth Proportional to 3,240, 4,467.36 and 2,649.28

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Solution

The fourth proportional to 3,240, 4,467.36 and 2,649.28 is: 3,652.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,240 : 4,467.36 = 2,649.28 : x
  2. Step 2: Convert to fraction form
    3,240/4,467.36 = 2,649.28/x
  3. Step 3: Cross multiply
    3,240x = 4,467.36 × 2,649.28
  4. Step 4: Simplify right side
    3,240x = 11,835,287.50
  5. Step 5: Solve for x
    x = 11,835,287.50/3,240
  6. Step 6: Final answer
    x = 3,652.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.