Home / 5,428.07-8,142.11-2,504.78

Finding the Fourth Proportional to 5,428.07, 8,142.11 and 2,504.78

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Solution

The fourth proportional to 5,428.07, 8,142.11 and 2,504.78 is: 3,757.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,428.07 : 8,142.11 = 2,504.78 : x
  2. Step 2: Convert to fraction form
    5,428.07/8,142.11 = 2,504.78/x
  3. Step 3: Cross multiply
    5,428.07x = 8,142.11 × 2,504.78
  4. Step 4: Simplify right side
    5,428.07x = 20,394,194.29
  5. Step 5: Solve for x
    x = 20,394,194.29/5,428.07
  6. Step 6: Final answer
    x = 3,757.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.