Home / 3,956.42-5,459.29-2,187.68

Finding the Fourth Proportional to 3,956.42, 5,459.29 and 2,187.68

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Solution

The fourth proportional to 3,956.42, 5,459.29 and 2,187.68 is: 3,018.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,956.42 : 5,459.29 = 2,187.68 : x
  2. Step 2: Convert to fraction form
    3,956.42/5,459.29 = 2,187.68/x
  3. Step 3: Cross multiply
    3,956.42x = 5,459.29 × 2,187.68
  4. Step 4: Simplify right side
    3,956.42x = 11,943,146.78
  5. Step 5: Solve for x
    x = 11,943,146.78/3,956.42
  6. Step 6: Final answer
    x = 3,018.67

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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.