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Finding the Fourth Proportional to 8,618.90, 11,895.18 and 5,082.44

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Solution

The fourth proportional to 8,618.90, 11,895.18 and 5,082.44 is: 7,014.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,618.90 : 11,895.18 = 5,082.44 : x
  2. Step 2: Convert to fraction form
    8,618.90/11,895.18 = 5,082.44/x
  3. Step 3: Cross multiply
    8,618.90x = 11,895.18 × 5,082.44
  4. Step 4: Simplify right side
    8,618.90x = 60,456,538.64
  5. Step 5: Solve for x
    x = 60,456,538.64/8,618.90
  6. Step 6: Final answer
    x = 7,014.41

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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.