Home / 3,996.70-5,515.60-2,228.65

Finding the Fourth Proportional to 3,996.70, 5,515.60 and 2,228.65

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Solution

The fourth proportional to 3,996.70, 5,515.60 and 2,228.65 is: 3,075.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,996.70 : 5,515.60 = 2,228.65 : x
  2. Step 2: Convert to fraction form
    3,996.70/5,515.60 = 2,228.65/x
  3. Step 3: Cross multiply
    3,996.70x = 5,515.60 × 2,228.65
  4. Step 4: Simplify right side
    3,996.70x = 12,292,337.10
  5. Step 5: Solve for x
    x = 12,292,337.10/3,996.70
  6. Step 6: Final answer
    x = 3,075.62

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Half scale
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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.