Home / 4,912.16-6,778.01-2,815.88

Finding the Fourth Proportional to 4,912.16, 6,778.01 and 2,815.88

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Solution

The fourth proportional to 4,912.16, 6,778.01 and 2,815.88 is: 3,885.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,912.16 : 6,778.01 = 2,815.88 : x
  2. Step 2: Convert to fraction form
    4,912.16/6,778.01 = 2,815.88/x
  3. Step 3: Cross multiply
    4,912.16x = 6,778.01 × 2,815.88
  4. Step 4: Simplify right side
    4,912.16x = 19,086,035.95
  5. Step 5: Solve for x
    x = 19,086,035.95/4,912.16
  6. Step 6: Final answer
    x = 3,885.47

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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.