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Finding the Fourth Proportional to 8,910.77, 13,354.54 and 3,639.62

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Solution

The fourth proportional to 8,910.77, 13,354.54 and 3,639.62 is: 5,454.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,910.77 : 13,354.54 = 3,639.62 : x
  2. Step 2: Convert to fraction form
    8,910.77/13,354.54 = 3,639.62/x
  3. Step 3: Cross multiply
    8,910.77x = 13,354.54 × 3,639.62
  4. Step 4: Simplify right side
    8,910.77x = 48,605,475.16
  5. Step 5: Solve for x
    x = 48,605,475.16/8,910.77
  6. Step 6: Final answer
    x = 5,454.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.