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Finding the Fourth Proportional to 1,614, 2,226.86 and 1,115.88

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Solution

The fourth proportional to 1,614, 2,226.86 and 1,115.88 is: 1,539.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,614 : 2,226.86 = 1,115.88 : x
  2. Step 2: Convert to fraction form
    1,614/2,226.86 = 1,115.88/x
  3. Step 3: Cross multiply
    1,614x = 2,226.86 × 1,115.88
  4. Step 4: Simplify right side
    1,614x = 2,484,908.54
  5. Step 5: Solve for x
    x = 2,484,908.54/1,614
  6. Step 6: Final answer
    x = 1,539.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.