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Finding the Fourth Proportional to 5,616.45, 8,424.99 and 2,839.86

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Solution

The fourth proportional to 5,616.45, 8,424.99 and 2,839.86 is: 4,259.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,616.45 : 8,424.99 = 2,839.86 : x
  2. Step 2: Convert to fraction form
    5,616.45/8,424.99 = 2,839.86/x
  3. Step 3: Cross multiply
    5,616.45x = 8,424.99 × 2,839.86
  4. Step 4: Simplify right side
    5,616.45x = 23,925,792.10
  5. Step 5: Solve for x
    x = 23,925,792.10/5,616.45
  6. Step 6: Final answer
    x = 4,259.95

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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.