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Finding the Fourth Proportional to 4,787.28, 7,169.67 and 3,682.80

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Solution

The fourth proportional to 4,787.28, 7,169.67 and 3,682.80 is: 5,515.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,787.28 : 7,169.67 = 3,682.80 : x
  2. Step 2: Convert to fraction form
    4,787.28/7,169.67 = 3,682.80/x
  3. Step 3: Cross multiply
    4,787.28x = 7,169.67 × 3,682.80
  4. Step 4: Simplify right side
    4,787.28x = 26,404,460.68
  5. Step 5: Solve for x
    x = 26,404,460.68/4,787.28
  6. Step 6: Final answer
    x = 5,515.55

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1.5x scale

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.