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Finding the Fourth Proportional to 5,020.87, 6,928.08 and 2,782.87

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Solution

The fourth proportional to 5,020.87, 6,928.08 and 2,782.87 is: 3,839.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,020.87 : 6,928.08 = 2,782.87 : x
  2. Step 2: Convert to fraction form
    5,020.87/6,928.08 = 2,782.87/x
  3. Step 3: Cross multiply
    5,020.87x = 6,928.08 × 2,782.87
  4. Step 4: Simplify right side
    5,020.87x = 19,279,972.86
  5. Step 5: Solve for x
    x = 19,279,972.86/5,020.87
  6. Step 6: Final answer
    x = 3,839.97

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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.