Home / 3,691.19-5,094.64-2,120.15

Finding the Fourth Proportional to 3,691.19, 5,094.64 and 2,120.15

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Solution

The fourth proportional to 3,691.19, 5,094.64 and 2,120.15 is: 2,926.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,691.19 : 5,094.64 = 2,120.15 : x
  2. Step 2: Convert to fraction form
    3,691.19/5,094.64 = 2,120.15/x
  3. Step 3: Cross multiply
    3,691.19x = 5,094.64 × 2,120.15
  4. Step 4: Simplify right side
    3,691.19x = 10,801,416.38
  5. Step 5: Solve for x
    x = 10,801,416.38/3,691.19
  6. Step 6: Final answer
    x = 2,926.27

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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.