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Finding the Fourth Proportional to 5,600.80, 8,400.86 and 2,479.89

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Solution

The fourth proportional to 5,600.80, 8,400.86 and 2,479.89 is: 3,719.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,600.80 : 8,400.86 = 2,479.89 : x
  2. Step 2: Convert to fraction form
    5,600.80/8,400.86 = 2,479.89/x
  3. Step 3: Cross multiply
    5,600.80x = 8,400.86 × 2,479.89
  4. Step 4: Simplify right side
    5,600.80x = 20,833,208.71
  5. Step 5: Solve for x
    x = 20,833,208.71/5,600.80
  6. Step 6: Final answer
    x = 3,719.68

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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.