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Finding the Fourth Proportional to 8,326.13, 11,455.43 and 7,203.47

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Solution

The fourth proportional to 8,326.13, 11,455.43 and 7,203.47 is: 9,910.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,326.13 : 11,455.43 = 7,203.47 : x
  2. Step 2: Convert to fraction form
    8,326.13/11,455.43 = 7,203.47/x
  3. Step 3: Cross multiply
    8,326.13x = 11,455.43 × 7,203.47
  4. Step 4: Simplify right side
    8,326.13x = 82,518,753.05
  5. Step 5: Solve for x
    x = 82,518,753.05/8,326.13
  6. Step 6: Final answer
    x = 9,910.82

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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.