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Finding the Fourth Proportional to 2,063.88, 3,089.34 and 1,415.88

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Solution

The fourth proportional to 2,063.88, 3,089.34 and 1,415.88 is: 2,119.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,063.88 : 3,089.34 = 1,415.88 : x
  2. Step 2: Convert to fraction form
    2,063.88/3,089.34 = 1,415.88/x
  3. Step 3: Cross multiply
    2,063.88x = 3,089.34 × 1,415.88
  4. Step 4: Simplify right side
    2,063.88x = 4,374,134.72
  5. Step 5: Solve for x
    x = 4,374,134.72/2,063.88
  6. Step 6: Final answer
    x = 2,119.37

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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.