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Finding the Fourth Proportional to 8,497.17, 11,721.36 and 7,895.79

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Solution

The fourth proportional to 8,497.17, 11,721.36 and 7,895.79 is: 10,891.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,497.17 : 11,721.36 = 7,895.79 : x
  2. Step 2: Convert to fraction form
    8,497.17/11,721.36 = 7,895.79/x
  3. Step 3: Cross multiply
    8,497.17x = 11,721.36 × 7,895.79
  4. Step 4: Simplify right side
    8,497.17x = 92,549,470.64
  5. Step 5: Solve for x
    x = 92,549,470.64/8,497.17
  6. Step 6: Final answer
    x = 10,891.80

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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.