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Finding the Fourth Proportional to 8,650.87, 11,943.96 and 5,115.22

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Solution

The fourth proportional to 8,650.87, 11,943.96 and 5,115.22 is: 7,062.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,650.87 : 11,943.96 = 5,115.22 : x
  2. Step 2: Convert to fraction form
    8,650.87/11,943.96 = 5,115.22/x
  3. Step 3: Cross multiply
    8,650.87x = 11,943.96 × 5,115.22
  4. Step 4: Simplify right side
    8,650.87x = 61,095,934.03
  5. Step 5: Solve for x
    x = 61,095,934.03/8,650.87
  6. Step 6: Final answer
    x = 7,062.41

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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.