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Finding the Fourth Proportional to 8,905.81, 13,354.81 and 4,227.17

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Solution

The fourth proportional to 8,905.81, 13,354.81 and 4,227.17 is: 6,338.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,905.81 : 13,354.81 = 4,227.17 : x
  2. Step 2: Convert to fraction form
    8,905.81/13,354.81 = 4,227.17/x
  3. Step 3: Cross multiply
    8,905.81x = 13,354.81 × 4,227.17
  4. Step 4: Simplify right side
    8,905.81x = 56,453,052.19
  5. Step 5: Solve for x
    x = 56,453,052.19/8,905.81
  6. Step 6: Final answer
    x = 6,338.90

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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.