Home / 3,186.56-4,781.10-1,431.08

Finding the Fourth Proportional to 3,186.56, 4,781.10 and 1,431.08

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Solution

The fourth proportional to 3,186.56, 4,781.10 and 1,431.08 is: 2,147.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,186.56 : 4,781.10 = 1,431.08 : x
  2. Step 2: Convert to fraction form
    3,186.56/4,781.10 = 1,431.08/x
  3. Step 3: Cross multiply
    3,186.56x = 4,781.10 × 1,431.08
  4. Step 4: Simplify right side
    3,186.56x = 6,842,144.96
  5. Step 5: Solve for x
    x = 6,842,144.96/3,186.56
  6. Step 6: Final answer
    x = 2,147.19

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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.