Home / 5,428.36-7,489.83-3,190.06

Finding the Fourth Proportional to 5,428.36, 7,489.83 and 3,190.06

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Solution

The fourth proportional to 5,428.36, 7,489.83 and 3,190.06 is: 4,401.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,428.36 : 7,489.83 = 3,190.06 : x
  2. Step 2: Convert to fraction form
    5,428.36/7,489.83 = 3,190.06/x
  3. Step 3: Cross multiply
    5,428.36x = 7,489.83 × 3,190.06
  4. Step 4: Simplify right side
    5,428.36x = 23,893,007.09
  5. Step 5: Solve for x
    x = 23,893,007.09/5,428.36
  6. Step 6: Final answer
    x = 4,401.51

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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.