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Finding the Fourth Proportional to 5,428.36, 7,487.94 and 3,331

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Solution

The fourth proportional to 5,428.36, 7,487.94 and 3,331 is: 4,594.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,428.36 : 7,487.94 = 3,331 : x
  2. Step 2: Convert to fraction form
    5,428.36/7,487.94 = 3,331/x
  3. Step 3: Cross multiply
    5,428.36x = 7,487.94 × 3,331
  4. Step 4: Simplify right side
    5,428.36x = 24,942,328.14
  5. Step 5: Solve for x
    x = 24,942,328.14/5,428.36
  6. Step 6: Final answer
    x = 4,594.82

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.