Home / 3,956.28-5,459.76-2,187.92

Finding the Fourth Proportional to 3,956.28, 5,459.76 and 2,187.92

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Solution

The fourth proportional to 3,956.28, 5,459.76 and 2,187.92 is: 3,019.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,956.28 : 5,459.76 = 2,187.92 : x
  2. Step 2: Convert to fraction form
    3,956.28/5,459.76 = 2,187.92/x
  3. Step 3: Cross multiply
    3,956.28x = 5,459.76 × 2,187.92
  4. Step 4: Simplify right side
    3,956.28x = 11,945,518.10
  5. Step 5: Solve for x
    x = 11,945,518.10/3,956.28
  6. Step 6: Final answer
    x = 3,019.38

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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.