Home / 4,115.21-5,679.12-2,346.78

Finding the Fourth Proportional to 4,115.21, 5,679.12 and 2,346.78

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Solution

The fourth proportional to 4,115.21, 5,679.12 and 2,346.78 is: 3,238.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,115.21 : 5,679.12 = 2,346.78 : x
  2. Step 2: Convert to fraction form
    4,115.21/5,679.12 = 2,346.78/x
  3. Step 3: Cross multiply
    4,115.21x = 5,679.12 × 2,346.78
  4. Step 4: Simplify right side
    4,115.21x = 13,327,645.23
  5. Step 5: Solve for x
    x = 13,327,645.23/4,115.21
  6. Step 6: Final answer
    x = 3,238.63

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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.