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Finding the Fourth Proportional to 5,391.84, 8,083.68 and 2,793.12

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Solution

The fourth proportional to 5,391.84, 8,083.68 and 2,793.12 is: 4,187.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,391.84 : 8,083.68 = 2,793.12 : x
  2. Step 2: Convert to fraction form
    5,391.84/8,083.68 = 2,793.12/x
  3. Step 3: Cross multiply
    5,391.84x = 8,083.68 × 2,793.12
  4. Step 4: Simplify right side
    5,391.84x = 22,578,688.28
  5. Step 5: Solve for x
    x = 22,578,688.28/5,391.84
  6. Step 6: Final answer
    x = 4,187.57

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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.