Home / 3,186.09-4,781.34-1,238.31

Finding the Fourth Proportional to 3,186.09, 4,781.34 and 1,238.31

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Solution

The fourth proportional to 3,186.09, 4,781.34 and 1,238.31 is: 1,858.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,186.09 : 4,781.34 = 1,238.31 : x
  2. Step 2: Convert to fraction form
    3,186.09/4,781.34 = 1,238.31/x
  3. Step 3: Cross multiply
    3,186.09x = 4,781.34 × 1,238.31
  4. Step 4: Simplify right side
    3,186.09x = 5,920,781.14
  5. Step 5: Solve for x
    x = 5,920,781.14/3,186.09
  6. Step 6: Final answer
    x = 1,858.32

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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.