Home / 5,428.73-7,489.14-3,190.56

Finding the Fourth Proportional to 5,428.73, 7,489.14 and 3,190.56

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Solution

The fourth proportional to 5,428.73, 7,489.14 and 3,190.56 is: 4,401.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,428.73 : 7,489.14 = 3,190.56 : x
  2. Step 2: Convert to fraction form
    5,428.73/7,489.14 = 3,190.56/x
  3. Step 3: Cross multiply
    5,428.73x = 7,489.14 × 3,190.56
  4. Step 4: Simplify right side
    5,428.73x = 23,894,550.52
  5. Step 5: Solve for x
    x = 23,894,550.52/5,428.73
  6. Step 6: Final answer
    x = 4,401.50

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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.