Home / 2,622.70-3,930.40-1,972.68

Finding the Fourth Proportional to 2,622.70, 3,930.40 and 1,972.68

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Solution

The fourth proportional to 2,622.70, 3,930.40 and 1,972.68 is: 2,956.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,622.70 : 3,930.40 = 1,972.68 : x
  2. Step 2: Convert to fraction form
    2,622.70/3,930.40 = 1,972.68/x
  3. Step 3: Cross multiply
    2,622.70x = 3,930.40 × 1,972.68
  4. Step 4: Simplify right side
    2,622.70x = 7,753,421.47
  5. Step 5: Solve for x
    x = 7,753,421.47/2,622.70
  6. Step 6: Final answer
    x = 2,956.27

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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.