Home / 4,778.78-7,164.32-2,179.89

Finding the Fourth Proportional to 4,778.78, 7,164.32 and 2,179.89

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Solution

The fourth proportional to 4,778.78, 7,164.32 and 2,179.89 is: 3,268.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,778.78 : 7,164.32 = 2,179.89 : x
  2. Step 2: Convert to fraction form
    4,778.78/7,164.32 = 2,179.89/x
  3. Step 3: Cross multiply
    4,778.78x = 7,164.32 × 2,179.89
  4. Step 4: Simplify right side
    4,778.78x = 15,617,418.63
  5. Step 5: Solve for x
    x = 15,617,418.63/4,778.78
  6. Step 6: Final answer
    x = 3,268.08

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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.