Home / 3,809.85-5,257.53-2,216.81

Finding the Fourth Proportional to 3,809.85, 5,257.53 and 2,216.81

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Solution

The fourth proportional to 3,809.85, 5,257.53 and 2,216.81 is: 3,059.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,809.85 : 5,257.53 = 2,216.81 : x
  2. Step 2: Convert to fraction form
    3,809.85/5,257.53 = 2,216.81/x
  3. Step 3: Cross multiply
    3,809.85x = 5,257.53 × 2,216.81
  4. Step 4: Simplify right side
    3,809.85x = 11,654,918.79
  5. Step 5: Solve for x
    x = 11,654,918.79/3,809.85
  6. Step 6: Final answer
    x = 3,059.15

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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.