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Finding the Fourth Proportional to 8,600.67, 12,890.20 and 4,651.77

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Solution

The fourth proportional to 8,600.67, 12,890.20 and 4,651.77 is: 6,971.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,600.67 : 12,890.20 = 4,651.77 : x
  2. Step 2: Convert to fraction form
    8,600.67/12,890.20 = 4,651.77/x
  3. Step 3: Cross multiply
    8,600.67x = 12,890.20 × 4,651.77
  4. Step 4: Simplify right side
    8,600.67x = 59,962,245.65
  5. Step 5: Solve for x
    x = 59,962,245.65/8,600.67
  6. Step 6: Final answer
    x = 6,971.81

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1.5x scale

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.