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Finding the Fourth Proportional to 2,015.62, 3,023.80 and 628.63

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Solution

The fourth proportional to 2,015.62, 3,023.80 and 628.63 is: 943.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,015.62 : 3,023.80 = 628.63 : x
  2. Step 2: Convert to fraction form
    2,015.62/3,023.80 = 628.63/x
  3. Step 3: Cross multiply
    2,015.62x = 3,023.80 × 628.63
  4. Step 4: Simplify right side
    2,015.62x = 1,900,842.26
  5. Step 5: Solve for x
    x = 1,900,842.26/2,015.62
  6. Step 6: Final answer
    x = 943.06

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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.