Home / 3,931.19-5,425.07-2,162.79

Finding the Fourth Proportional to 3,931.19, 5,425.07 and 2,162.79

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Solution

The fourth proportional to 3,931.19, 5,425.07 and 2,162.79 is: 2,984.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,931.19 : 5,425.07 = 2,162.79 : x
  2. Step 2: Convert to fraction form
    3,931.19/5,425.07 = 2,162.79/x
  3. Step 3: Cross multiply
    3,931.19x = 5,425.07 × 2,162.79
  4. Step 4: Simplify right side
    3,931.19x = 11,733,313.68
  5. Step 5: Solve for x
    x = 11,733,313.68/3,931.19
  6. Step 6: Final answer
    x = 2,984.67

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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.