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Finding the Fourth Proportional to 8,619.66, 11,894.76 and 5,082.12

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Solution

The fourth proportional to 8,619.66, 11,894.76 and 5,082.12 is: 7,013.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,619.66 : 11,894.76 = 5,082.12 : x
  2. Step 2: Convert to fraction form
    8,619.66/11,894.76 = 5,082.12/x
  3. Step 3: Cross multiply
    8,619.66x = 11,894.76 × 5,082.12
  4. Step 4: Simplify right side
    8,619.66x = 60,450,597.69
  5. Step 5: Solve for x
    x = 60,450,597.69/8,619.66
  6. Step 6: Final answer
    x = 7,013.11

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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.