Home / 6,620.12-9,136.88-3,787.61

Finding the Fourth Proportional to 6,620.12, 9,136.88 and 3,787.61

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Solution

The fourth proportional to 6,620.12, 9,136.88 and 3,787.61 is: 5,227.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,620.12 : 9,136.88 = 3,787.61 : x
  2. Step 2: Convert to fraction form
    6,620.12/9,136.88 = 3,787.61/x
  3. Step 3: Cross multiply
    6,620.12x = 9,136.88 × 3,787.61
  4. Step 4: Simplify right side
    6,620.12x = 34,606,928.38
  5. Step 5: Solve for x
    x = 34,606,928.38/6,620.12
  6. Step 6: Final answer
    x = 5,227.54

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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.