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Finding the Fourth Proportional to 8,578.35, 12,867.51 and 5,655.96

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Solution

The fourth proportional to 8,578.35, 12,867.51 and 5,655.96 is: 8,483.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,578.35 : 12,867.51 = 5,655.96 : x
  2. Step 2: Convert to fraction form
    8,578.35/12,867.51 = 5,655.96/x
  3. Step 3: Cross multiply
    8,578.35x = 12,867.51 × 5,655.96
  4. Step 4: Simplify right side
    8,578.35x = 72,778,121.86
  5. Step 5: Solve for x
    x = 72,778,121.86/8,578.35
  6. Step 6: Final answer
    x = 8,483.93

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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.