Home / 4,912.30-6,778.93-2,816.38

Finding the Fourth Proportional to 4,912.30, 6,778.93 and 2,816.38

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Solution

The fourth proportional to 4,912.30, 6,778.93 and 2,816.38 is: 3,886.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,912.30 : 6,778.93 = 2,816.38 : x
  2. Step 2: Convert to fraction form
    4,912.30/6,778.93 = 2,816.38/x
  3. Step 3: Cross multiply
    4,912.30x = 6,778.93 × 2,816.38
  4. Step 4: Simplify right side
    4,912.30x = 19,092,042.87
  5. Step 5: Solve for x
    x = 19,092,042.87/4,912.30
  6. Step 6: Final answer
    x = 3,886.58

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1.5x scale

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.