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Finding the Fourth Proportional to 3,770.31, 5,655.15 and 1,173

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Solution

The fourth proportional to 3,770.31, 5,655.15 and 1,173 is: 1,759.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,770.31 : 5,655.15 = 1,173 : x
  2. Step 2: Convert to fraction form
    3,770.31/5,655.15 = 1,173/x
  3. Step 3: Cross multiply
    3,770.31x = 5,655.15 × 1,173
  4. Step 4: Simplify right side
    3,770.31x = 6,633,490.95
  5. Step 5: Solve for x
    x = 6,633,490.95/3,770.31
  6. Step 6: Final answer
    x = 1,759.40

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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.