Home / 3,493.11-4,820.50-1,921.21

Finding the Fourth Proportional to 3,493.11, 4,820.50 and 1,921.21

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Solution

The fourth proportional to 3,493.11, 4,820.50 and 1,921.21 is: 2,651.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,493.11 : 4,820.50 = 1,921.21 : x
  2. Step 2: Convert to fraction form
    3,493.11/4,820.50 = 1,921.21/x
  3. Step 3: Cross multiply
    3,493.11x = 4,820.50 × 1,921.21
  4. Step 4: Simplify right side
    3,493.11x = 9,261,192.81
  5. Step 5: Solve for x
    x = 9,261,192.81/3,493.11
  6. Step 6: Final answer
    x = 2,651.27

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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.