Home / 3,956.15-5,459.31-2,163.58

Finding the Fourth Proportional to 3,956.15, 5,459.31 and 2,163.58

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Solution

The fourth proportional to 3,956.15, 5,459.31 and 2,163.58 is: 2,985.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,956.15 : 5,459.31 = 2,163.58 : x
  2. Step 2: Convert to fraction form
    3,956.15/5,459.31 = 2,163.58/x
  3. Step 3: Cross multiply
    3,956.15x = 5,459.31 × 2,163.58
  4. Step 4: Simplify right side
    3,956.15x = 11,811,653.93
  5. Step 5: Solve for x
    x = 11,811,653.93/3,956.15
  6. Step 6: Final answer
    x = 2,985.64

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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.