Home / 3,956.15-5,459.76-2,187.72

Finding the Fourth Proportional to 3,956.15, 5,459.76 and 2,187.72

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Solution

The fourth proportional to 3,956.15, 5,459.76 and 2,187.72 is: 3,019.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,956.15 : 5,459.76 = 2,187.72 : x
  2. Step 2: Convert to fraction form
    3,956.15/5,459.76 = 2,187.72/x
  3. Step 3: Cross multiply
    3,956.15x = 5,459.76 × 2,187.72
  4. Step 4: Simplify right side
    3,956.15x = 11,944,426.15
  5. Step 5: Solve for x
    x = 11,944,426.15/3,956.15
  6. Step 6: Final answer
    x = 3,019.21

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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.