Home / 3,781.16-5,218.86-2,289.14

Finding the Fourth Proportional to 3,781.16, 5,218.86 and 2,289.14

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Solution

The fourth proportional to 3,781.16, 5,218.86 and 2,289.14 is: 3,159.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,781.16 : 5,218.86 = 2,289.14 : x
  2. Step 2: Convert to fraction form
    3,781.16/5,218.86 = 2,289.14/x
  3. Step 3: Cross multiply
    3,781.16x = 5,218.86 × 2,289.14
  4. Step 4: Simplify right side
    3,781.16x = 11,946,701.18
  5. Step 5: Solve for x
    x = 11,946,701.18/3,781.16
  6. Step 6: Final answer
    x = 3,159.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.