Home / 3,959.78-5,464.48-2,388.16

Finding the Fourth Proportional to 3,959.78, 5,464.48 and 2,388.16

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Solution

The fourth proportional to 3,959.78, 5,464.48 and 2,388.16 is: 3,295.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,959.78 : 5,464.48 = 2,388.16 : x
  2. Step 2: Convert to fraction form
    3,959.78/5,464.48 = 2,388.16/x
  3. Step 3: Cross multiply
    3,959.78x = 5,464.48 × 2,388.16
  4. Step 4: Simplify right side
    3,959.78x = 13,050,052.56
  5. Step 5: Solve for x
    x = 13,050,052.56/3,959.78
  6. Step 6: Final answer
    x = 3,295.65

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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.