Home / 5,428.44-7,489.92-3,190.40

Finding the Fourth Proportional to 5,428.44, 7,489.92 and 3,190.40

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Solution

The fourth proportional to 5,428.44, 7,489.92 and 3,190.40 is: 4,401.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,428.44 : 7,489.92 = 3,190.40 : x
  2. Step 2: Convert to fraction form
    5,428.44/7,489.92 = 3,190.40/x
  3. Step 3: Cross multiply
    5,428.44x = 7,489.92 × 3,190.40
  4. Step 4: Simplify right side
    5,428.44x = 23,895,840.77
  5. Step 5: Solve for x
    x = 23,895,840.77/5,428.44
  6. Step 6: Final answer
    x = 4,401.97

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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.