Home / 3,871.76-5,343.72-2,193.68

Finding the Fourth Proportional to 3,871.76, 5,343.72 and 2,193.68

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Solution

The fourth proportional to 3,871.76, 5,343.72 and 2,193.68 is: 3,027.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,871.76 : 5,343.72 = 2,193.68 : x
  2. Step 2: Convert to fraction form
    3,871.76/5,343.72 = 2,193.68/x
  3. Step 3: Cross multiply
    3,871.76x = 5,343.72 × 2,193.68
  4. Step 4: Simplify right side
    3,871.76x = 11,722,411.69
  5. Step 5: Solve for x
    x = 11,722,411.69/3,871.76
  6. Step 6: Final answer
    x = 3,027.67

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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.