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Finding the Fourth Proportional to 8,578.77, 12,863.70 and 4,417.80

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Solution

The fourth proportional to 8,578.77, 12,863.70 and 4,417.80 is: 6,624.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,578.77 : 12,863.70 = 4,417.80 : x
  2. Step 2: Convert to fraction form
    8,578.77/12,863.70 = 4,417.80/x
  3. Step 3: Cross multiply
    8,578.77x = 12,863.70 × 4,417.80
  4. Step 4: Simplify right side
    8,578.77x = 56,829,253.86
  5. Step 5: Solve for x
    x = 56,829,253.86/8,578.77
  6. Step 6: Final answer
    x = 6,624.41

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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.