Home / 3,690.22-5,090.70-2,197.66

Finding the Fourth Proportional to 3,690.22, 5,090.70 and 2,197.66

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Solution

The fourth proportional to 3,690.22, 5,090.70 and 2,197.66 is: 3,031.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,690.22 : 5,090.70 = 2,197.66 : x
  2. Step 2: Convert to fraction form
    3,690.22/5,090.70 = 2,197.66/x
  3. Step 3: Cross multiply
    3,690.22x = 5,090.70 × 2,197.66
  4. Step 4: Simplify right side
    3,690.22x = 11,187,627.76
  5. Step 5: Solve for x
    x = 11,187,627.76/3,690.22
  6. Step 6: Final answer
    x = 3,031.70

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1.5x scale

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.