Home / 3,688.81-5,090.22-2,197.09

Finding the Fourth Proportional to 3,688.81, 5,090.22 and 2,197.09

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Solution

The fourth proportional to 3,688.81, 5,090.22 and 2,197.09 is: 3,031.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,688.81 : 5,090.22 = 2,197.09 : x
  2. Step 2: Convert to fraction form
    3,688.81/5,090.22 = 2,197.09/x
  3. Step 3: Cross multiply
    3,688.81x = 5,090.22 × 2,197.09
  4. Step 4: Simplify right side
    3,688.81x = 11,183,671.46
  5. Step 5: Solve for x
    x = 11,183,671.46/3,688.81
  6. Step 6: Final answer
    x = 3,031.78

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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.