Home / 3,818.21-5,727.51-1,187.51

Finding the Fourth Proportional to 3,818.21, 5,727.51 and 1,187.51

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Solution

The fourth proportional to 3,818.21, 5,727.51 and 1,187.51 is: 1,781.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,818.21 : 5,727.51 = 1,187.51 : x
  2. Step 2: Convert to fraction form
    3,818.21/5,727.51 = 1,187.51/x
  3. Step 3: Cross multiply
    3,818.21x = 5,727.51 × 1,187.51
  4. Step 4: Simplify right side
    3,818.21x = 6,801,478.98
  5. Step 5: Solve for x
    x = 6,801,478.98/3,818.21
  6. Step 6: Final answer
    x = 1,781.32

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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.