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Finding the Fourth Proportional to 8,604.68, 12,905.49 and 5,475.40

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Solution

The fourth proportional to 8,604.68, 12,905.49 and 5,475.40 is: 8,212.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,604.68 : 12,905.49 = 5,475.40 : x
  2. Step 2: Convert to fraction form
    8,604.68/12,905.49 = 5,475.40/x
  3. Step 3: Cross multiply
    8,604.68x = 12,905.49 × 5,475.40
  4. Step 4: Simplify right side
    8,604.68x = 70,662,662.02
  5. Step 5: Solve for x
    x = 70,662,662.02/8,604.68
  6. Step 6: Final answer
    x = 8,212.12

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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.