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Finding the Fourth Proportional to 3,755.99, 5,634.29 and 1,290.81

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Solution

The fourth proportional to 3,755.99, 5,634.29 and 1,290.81 is: 1,936.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,755.99 : 5,634.29 = 1,290.81 : x
  2. Step 2: Convert to fraction form
    3,755.99/5,634.29 = 1,290.81/x
  3. Step 3: Cross multiply
    3,755.99x = 5,634.29 × 1,290.81
  4. Step 4: Simplify right side
    3,755.99x = 7,272,822.23
  5. Step 5: Solve for x
    x = 7,272,822.23/3,755.99
  6. Step 6: Final answer
    x = 1,936.33

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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.