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Finding the Fourth Proportional to 8,327.70, 12,455.10 and 6,359.40

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Solution

The fourth proportional to 8,327.70, 12,455.10 and 6,359.40 is: 9,511.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,327.70 : 12,455.10 = 6,359.40 : x
  2. Step 2: Convert to fraction form
    8,327.70/12,455.10 = 6,359.40/x
  3. Step 3: Cross multiply
    8,327.70x = 12,455.10 × 6,359.40
  4. Step 4: Simplify right side
    8,327.70x = 79,206,962.94
  5. Step 5: Solve for x
    x = 79,206,962.94/8,327.70
  6. Step 6: Final answer
    x = 9,511.27

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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.