Home / 6,620.70-9,136.56-3,826.20

Finding the Fourth Proportional to 6,620.70, 9,136.56 and 3,826.20

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Solution

The fourth proportional to 6,620.70, 9,136.56 and 3,826.20 is: 5,280.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,620.70 : 9,136.56 = 3,826.20 : x
  2. Step 2: Convert to fraction form
    6,620.70/9,136.56 = 3,826.20/x
  3. Step 3: Cross multiply
    6,620.70x = 9,136.56 × 3,826.20
  4. Step 4: Simplify right side
    6,620.70x = 34,958,305.87
  5. Step 5: Solve for x
    x = 34,958,305.87/6,620.70
  6. Step 6: Final answer
    x = 5,280.15

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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.