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Finding the Fourth Proportional to 5,016.72, 6,923.20 and 2,778.68

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Solution

The fourth proportional to 5,016.72, 6,923.20 and 2,778.68 is: 3,834.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,016.72 : 6,923.20 = 2,778.68 : x
  2. Step 2: Convert to fraction form
    5,016.72/6,923.20 = 2,778.68/x
  3. Step 3: Cross multiply
    5,016.72x = 6,923.20 × 2,778.68
  4. Step 4: Simplify right side
    5,016.72x = 19,237,357.38
  5. Step 5: Solve for x
    x = 19,237,357.38/5,016.72
  6. Step 6: Final answer
    x = 3,834.65

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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.