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Finding the Fourth Proportional to 8,639.03, 11,910.95 and 5,650.13

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Solution

The fourth proportional to 8,639.03, 11,910.95 and 5,650.13 is: 7,790.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,639.03 : 11,910.95 = 5,650.13 : x
  2. Step 2: Convert to fraction form
    8,639.03/11,910.95 = 5,650.13/x
  3. Step 3: Cross multiply
    8,639.03x = 11,910.95 × 5,650.13
  4. Step 4: Simplify right side
    8,639.03x = 67,298,356.37
  5. Step 5: Solve for x
    x = 67,298,356.37/8,639.03
  6. Step 6: Final answer
    x = 7,790.04

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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.