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Finding the Fourth Proportional to 8,649.28, 11,936.80 and 6,762.56

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Solution

The fourth proportional to 8,649.28, 11,936.80 and 6,762.56 is: 9,332.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,649.28 : 11,936.80 = 6,762.56 : x
  2. Step 2: Convert to fraction form
    8,649.28/11,936.80 = 6,762.56/x
  3. Step 3: Cross multiply
    8,649.28x = 11,936.80 × 6,762.56
  4. Step 4: Simplify right side
    8,649.28x = 80,723,326.21
  5. Step 5: Solve for x
    x = 80,723,326.21/8,649.28
  6. Step 6: Final answer
    x = 9,332.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.