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Finding the Fourth Proportional to 3,755.95, 5,634.90 and 1,123.51

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Solution

The fourth proportional to 3,755.95, 5,634.90 and 1,123.51 is: 1,685.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,755.95 : 5,634.90 = 1,123.51 : x
  2. Step 2: Convert to fraction form
    3,755.95/5,634.90 = 1,123.51/x
  3. Step 3: Cross multiply
    3,755.95x = 5,634.90 × 1,123.51
  4. Step 4: Simplify right side
    3,755.95x = 6,330,866.50
  5. Step 5: Solve for x
    x = 6,330,866.50/3,755.95
  6. Step 6: Final answer
    x = 1,685.56

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1.5x scale

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.