Home / 3,493.09-4,820.39-1,921.21

Finding the Fourth Proportional to 3,493.09, 4,820.39 and 1,921.21

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Solution

The fourth proportional to 3,493.09, 4,820.39 and 1,921.21 is: 2,651.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,493.09 : 4,820.39 = 1,921.21 : x
  2. Step 2: Convert to fraction form
    3,493.09/4,820.39 = 1,921.21/x
  3. Step 3: Cross multiply
    3,493.09x = 4,820.39 × 1,921.21
  4. Step 4: Simplify right side
    3,493.09x = 9,260,971.87
  5. Step 5: Solve for x
    x = 9,260,971.87/3,493.09
  6. Step 6: Final answer
    x = 2,651.23

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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.