Home / 3,805.21-5,251.03-2,389.65

Finding the Fourth Proportional to 3,805.21, 5,251.03 and 2,389.65

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Solution

The fourth proportional to 3,805.21, 5,251.03 and 2,389.65 is: 3,297.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,805.21 : 5,251.03 = 2,389.65 : x
  2. Step 2: Convert to fraction form
    3,805.21/5,251.03 = 2,389.65/x
  3. Step 3: Cross multiply
    3,805.21x = 5,251.03 × 2,389.65
  4. Step 4: Simplify right side
    3,805.21x = 12,548,123.84
  5. Step 5: Solve for x
    x = 12,548,123.84/3,805.21
  6. Step 6: Final answer
    x = 3,297.62

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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.