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Finding the Fourth Proportional to 3,770.63, 5,657.06 and 1,690.17

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Solution

The fourth proportional to 3,770.63, 5,657.06 and 1,690.17 is: 2,535.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,770.63 : 5,657.06 = 1,690.17 : x
  2. Step 2: Convert to fraction form
    3,770.63/5,657.06 = 1,690.17/x
  3. Step 3: Cross multiply
    3,770.63x = 5,657.06 × 1,690.17
  4. Step 4: Simplify right side
    3,770.63x = 9,561,384.65
  5. Step 5: Solve for x
    x = 9,561,384.65/3,770.63
  6. Step 6: Final answer
    x = 2,535.76

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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.