Home / 3,421.81-5,138.56-2,043.70

Finding the Fourth Proportional to 3,421.81, 5,138.56 and 2,043.70

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Solution

The fourth proportional to 3,421.81, 5,138.56 and 2,043.70 is: 3,069.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.81 : 5,138.56 = 2,043.70 : x
  2. Step 2: Convert to fraction form
    3,421.81/5,138.56 = 2,043.70/x
  3. Step 3: Cross multiply
    3,421.81x = 5,138.56 × 2,043.70
  4. Step 4: Simplify right side
    3,421.81x = 10,501,664.78
  5. Step 5: Solve for x
    x = 10,501,664.78/3,421.81
  6. Step 6: Final answer
    x = 3,069.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.