Home / 3,690.90-5,536.35-2,135.70

Finding the Fourth Proportional to 3,690.90, 5,536.35 and 2,135.70

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Solution

The fourth proportional to 3,690.90, 5,536.35 and 2,135.70 is: 3,203.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,690.90 : 5,536.35 = 2,135.70 : x
  2. Step 2: Convert to fraction form
    3,690.90/5,536.35 = 2,135.70/x
  3. Step 3: Cross multiply
    3,690.90x = 5,536.35 × 2,135.70
  4. Step 4: Simplify right side
    3,690.90x = 11,823,982.70
  5. Step 5: Solve for x
    x = 11,823,982.70/3,690.90
  6. Step 6: Final answer
    x = 3,203.55

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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.