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Finding the Fourth Proportional to 8,668.27, 12,939.71 and 7,617.34

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Solution

The fourth proportional to 8,668.27, 12,939.71 and 7,617.34 is: 11,370.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,668.27 : 12,939.71 = 7,617.34 : x
  2. Step 2: Convert to fraction form
    8,668.27/12,939.71 = 7,617.34/x
  3. Step 3: Cross multiply
    8,668.27x = 12,939.71 × 7,617.34
  4. Step 4: Simplify right side
    8,668.27x = 98,566,170.57
  5. Step 5: Solve for x
    x = 98,566,170.57/8,668.27
  6. Step 6: Final answer
    x = 11,370.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.