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Finding the Fourth Proportional to 3,620.70, 5,419.26 and 1,973.16

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Solution

The fourth proportional to 3,620.70, 5,419.26 and 1,973.16 is: 2,953.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,620.70 : 5,419.26 = 1,973.16 : x
  2. Step 2: Convert to fraction form
    3,620.70/5,419.26 = 1,973.16/x
  3. Step 3: Cross multiply
    3,620.70x = 5,419.26 × 1,973.16
  4. Step 4: Simplify right side
    3,620.70x = 10,693,067.06
  5. Step 5: Solve for x
    x = 10,693,067.06/3,620.70
  6. Step 6: Final answer
    x = 2,953.31

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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.