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Finding the Fourth Proportional to 3,154.82, 4,729.82 and 1,922

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Solution

The fourth proportional to 3,154.82, 4,729.82 and 1,922 is: 2,881.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,154.82 : 4,729.82 = 1,922 : x
  2. Step 2: Convert to fraction form
    3,154.82/4,729.82 = 1,922/x
  3. Step 3: Cross multiply
    3,154.82x = 4,729.82 × 1,922
  4. Step 4: Simplify right side
    3,154.82x = 9,090,714.04
  5. Step 5: Solve for x
    x = 9,090,714.04/3,154.82
  6. Step 6: Final answer
    x = 2,881.53

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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.