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Finding the Fourth Proportional to 5,657.86, 8,479.86 and 3,319.03

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Solution

The fourth proportional to 5,657.86, 8,479.86 and 3,319.03 is: 4,974.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,657.86 : 8,479.86 = 3,319.03 : x
  2. Step 2: Convert to fraction form
    5,657.86/8,479.86 = 3,319.03/x
  3. Step 3: Cross multiply
    5,657.86x = 8,479.86 × 3,319.03
  4. Step 4: Simplify right side
    5,657.86x = 28,144,909.74
  5. Step 5: Solve for x
    x = 28,144,909.74/5,657.86
  6. Step 6: Final answer
    x = 4,974.48

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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.