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Finding the Fourth Proportional to 8,619, 11,893.66 and 5,082.04

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Solution

The fourth proportional to 8,619, 11,893.66 and 5,082.04 is: 7,012.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,619 : 11,893.66 = 5,082.04 : x
  2. Step 2: Convert to fraction form
    8,619/11,893.66 = 5,082.04/x
  3. Step 3: Cross multiply
    8,619x = 11,893.66 × 5,082.04
  4. Step 4: Simplify right side
    8,619x = 60,444,055.87
  5. Step 5: Solve for x
    x = 60,444,055.87/8,619
  6. Step 6: Final answer
    x = 7,012.89

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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.