Home / 3,801.15-5,245.11-2,122.65

Finding the Fourth Proportional to 3,801.15, 5,245.11 and 2,122.65

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Solution

The fourth proportional to 3,801.15, 5,245.11 and 2,122.65 is: 2,928.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,801.15 : 5,245.11 = 2,122.65 : x
  2. Step 2: Convert to fraction form
    3,801.15/5,245.11 = 2,122.65/x
  3. Step 3: Cross multiply
    3,801.15x = 5,245.11 × 2,122.65
  4. Step 4: Simplify right side
    3,801.15x = 11,133,532.74
  5. Step 5: Solve for x
    x = 11,133,532.74/3,801.15
  6. Step 6: Final answer
    x = 2,928.99

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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.