Home / 3,929.05-5,420.74-2,436.43

Finding the Fourth Proportional to 3,929.05, 5,420.74 and 2,436.43

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Solution

The fourth proportional to 3,929.05, 5,420.74 and 2,436.43 is: 3,361.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,929.05 : 5,420.74 = 2,436.43 : x
  2. Step 2: Convert to fraction form
    3,929.05/5,420.74 = 2,436.43/x
  3. Step 3: Cross multiply
    3,929.05x = 5,420.74 × 2,436.43
  4. Step 4: Simplify right side
    3,929.05x = 13,207,253.56
  5. Step 5: Solve for x
    x = 13,207,253.56/3,929.05
  6. Step 6: Final answer
    x = 3,361.44

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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.