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Finding the Fourth Proportional to 8,602.72, 11,879.82 and 5,583.04

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Solution

The fourth proportional to 8,602.72, 11,879.82 and 5,583.04 is: 7,709.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,602.72 : 11,879.82 = 5,583.04 : x
  2. Step 2: Convert to fraction form
    8,602.72/11,879.82 = 5,583.04/x
  3. Step 3: Cross multiply
    8,602.72x = 11,879.82 × 5,583.04
  4. Step 4: Simplify right side
    8,602.72x = 66,325,510.25
  5. Step 5: Solve for x
    x = 66,325,510.25/8,602.72
  6. Step 6: Final answer
    x = 7,709.83

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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.