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Finding the Fourth Proportional to 6,633.84, 9,155.13 and 3,981.12

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Solution

The fourth proportional to 6,633.84, 9,155.13 and 3,981.12 is: 5,494.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,633.84 : 9,155.13 = 3,981.12 : x
  2. Step 2: Convert to fraction form
    6,633.84/9,155.13 = 3,981.12/x
  3. Step 3: Cross multiply
    6,633.84x = 9,155.13 × 3,981.12
  4. Step 4: Simplify right side
    6,633.84x = 36,447,671.15
  5. Step 5: Solve for x
    x = 36,447,671.15/6,633.84
  6. Step 6: Final answer
    x = 5,494.20

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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.