Home / 4,778.64-7,168.80-2,181.84

Finding the Fourth Proportional to 4,778.64, 7,168.80 and 2,181.84

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Solution

The fourth proportional to 4,778.64, 7,168.80 and 2,181.84 is: 3,273.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,778.64 : 7,168.80 = 2,181.84 : x
  2. Step 2: Convert to fraction form
    4,778.64/7,168.80 = 2,181.84/x
  3. Step 3: Cross multiply
    4,778.64x = 7,168.80 × 2,181.84
  4. Step 4: Simplify right side
    4,778.64x = 15,641,174.59
  5. Step 5: Solve for x
    x = 15,641,174.59/4,778.64
  6. Step 6: Final answer
    x = 3,273.14

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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.