Home / 3,872.82-5,346.13-2,615.58

Finding the Fourth Proportional to 3,872.82, 5,346.13 and 2,615.58

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Solution

The fourth proportional to 3,872.82, 5,346.13 and 2,615.58 is: 3,610.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,872.82 : 5,346.13 = 2,615.58 : x
  2. Step 2: Convert to fraction form
    3,872.82/5,346.13 = 2,615.58/x
  3. Step 3: Cross multiply
    3,872.82x = 5,346.13 × 2,615.58
  4. Step 4: Simplify right side
    3,872.82x = 13,983,224.17
  5. Step 5: Solve for x
    x = 13,983,224.17/3,872.82
  6. Step 6: Final answer
    x = 3,610.61

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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.