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Finding the Fourth Proportional to 8,382.72, 12,556.08 and 7,892.01

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Solution

The fourth proportional to 8,382.72, 12,556.08 and 7,892.01 is: 11,821.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,382.72 : 12,556.08 = 7,892.01 : x
  2. Step 2: Convert to fraction form
    8,382.72/12,556.08 = 7,892.01/x
  3. Step 3: Cross multiply
    8,382.72x = 12,556.08 × 7,892.01
  4. Step 4: Simplify right side
    8,382.72x = 99,092,640.31
  5. Step 5: Solve for x
    x = 99,092,640.31/8,382.72
  6. Step 6: Final answer
    x = 11,821.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.