Home / 3,933.18-5,428.15-2,255.13

Finding the Fourth Proportional to 3,933.18, 5,428.15 and 2,255.13

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Solution

The fourth proportional to 3,933.18, 5,428.15 and 2,255.13 is: 3,112.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,933.18 : 5,428.15 = 2,255.13 : x
  2. Step 2: Convert to fraction form
    3,933.18/5,428.15 = 2,255.13/x
  3. Step 3: Cross multiply
    3,933.18x = 5,428.15 × 2,255.13
  4. Step 4: Simplify right side
    3,933.18x = 12,241,178.27
  5. Step 5: Solve for x
    x = 12,241,178.27/3,933.18
  6. Step 6: Final answer
    x = 3,112.29

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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.