Home / 3,996.91-5,515.45-2,228.61

Finding the Fourth Proportional to 3,996.91, 5,515.45 and 2,228.61

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Solution

The fourth proportional to 3,996.91, 5,515.45 and 2,228.61 is: 3,075.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,996.91 : 5,515.45 = 2,228.61 : x
  2. Step 2: Convert to fraction form
    3,996.91/5,515.45 = 2,228.61/x
  3. Step 3: Cross multiply
    3,996.91x = 5,515.45 × 2,228.61
  4. Step 4: Simplify right side
    3,996.91x = 12,291,787.02
  5. Step 5: Solve for x
    x = 12,291,787.02/3,996.91
  6. Step 6: Final answer
    x = 3,075.32

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Half scale
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Double 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.