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Finding the Fourth Proportional to 4,787.91, 7,182.54 and 2,012.85

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Solution

The fourth proportional to 4,787.91, 7,182.54 and 2,012.85 is: 3,019.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,787.91 : 7,182.54 = 2,012.85 : x
  2. Step 2: Convert to fraction form
    4,787.91/7,182.54 = 2,012.85/x
  3. Step 3: Cross multiply
    4,787.91x = 7,182.54 × 2,012.85
  4. Step 4: Simplify right side
    4,787.91x = 14,457,375.64
  5. Step 5: Solve for x
    x = 14,457,375.64/4,787.91
  6. Step 6: Final answer
    x = 3,019.56

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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.