Home / 3,921.05-5,909.12-3,531.54

Finding the Fourth Proportional to 3,921.05, 5,909.12 and 3,531.54

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Solution

The fourth proportional to 3,921.05, 5,909.12 and 3,531.54 is: 5,322.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,921.05 : 5,909.12 = 3,531.54 : x
  2. Step 2: Convert to fraction form
    3,921.05/5,909.12 = 3,531.54/x
  3. Step 3: Cross multiply
    3,921.05x = 5,909.12 × 3,531.54
  4. Step 4: Simplify right side
    3,921.05x = 20,868,275.99
  5. Step 5: Solve for x
    x = 20,868,275.99/3,921.05
  6. Step 6: Final answer
    x = 5,322.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.