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Finding the Fourth Proportional to 8,605.72, 12,910.70 and 2,762.33

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Solution

The fourth proportional to 8,605.72, 12,910.70 and 2,762.33 is: 4,144.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,605.72 : 12,910.70 = 2,762.33 : x
  2. Step 2: Convert to fraction form
    8,605.72/12,910.70 = 2,762.33/x
  3. Step 3: Cross multiply
    8,605.72x = 12,910.70 × 2,762.33
  4. Step 4: Simplify right side
    8,605.72x = 35,663,613.93
  5. Step 5: Solve for x
    x = 35,663,613.93/8,605.72
  6. Step 6: Final answer
    x = 4,144.18

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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.