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Finding the Fourth Proportional to 1,770.91, 2,657.75 and 1,226.91

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Solution

The fourth proportional to 1,770.91, 2,657.75 and 1,226.91 is: 1,841.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,770.91 : 2,657.75 = 1,226.91 : x
  2. Step 2: Convert to fraction form
    1,770.91/2,657.75 = 1,226.91/x
  3. Step 3: Cross multiply
    1,770.91x = 2,657.75 × 1,226.91
  4. Step 4: Simplify right side
    1,770.91x = 3,260,820.05
  5. Step 5: Solve for x
    x = 3,260,820.05/1,770.91
  6. Step 6: Final answer
    x = 1,841.32

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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.