Home / 3,781.08-5,215.68-2,602.08

Finding the Fourth Proportional to 3,781.08, 5,215.68 and 2,602.08

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Solution

The fourth proportional to 3,781.08, 5,215.68 and 2,602.08 is: 3,589.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,781.08 : 5,215.68 = 2,602.08 : x
  2. Step 2: Convert to fraction form
    3,781.08/5,215.68 = 2,602.08/x
  3. Step 3: Cross multiply
    3,781.08x = 5,215.68 × 2,602.08
  4. Step 4: Simplify right side
    3,781.08x = 13,571,616.61
  5. Step 5: Solve for x
    x = 13,571,616.61/3,781.08
  6. Step 6: Final answer
    x = 3,589.35

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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.