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Finding the Fourth Proportional to 8,351.31, 11,526.12 and 4,815.66

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Solution

The fourth proportional to 8,351.31, 11,526.12 and 4,815.66 is: 6,646.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,351.31 : 11,526.12 = 4,815.66 : x
  2. Step 2: Convert to fraction form
    8,351.31/11,526.12 = 4,815.66/x
  3. Step 3: Cross multiply
    8,351.31x = 11,526.12 × 4,815.66
  4. Step 4: Simplify right side
    8,351.31x = 55,505,875.04
  5. Step 5: Solve for x
    x = 55,505,875.04/8,351.31
  6. Step 6: Final answer
    x = 6,646.37

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Double scale
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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.