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Finding the Fourth Proportional to 8,369.15, 12,555.26 and 6,822.70

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Solution

The fourth proportional to 8,369.15, 12,555.26 and 6,822.70 is: 10,235.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,369.15 : 12,555.26 = 6,822.70 : x
  2. Step 2: Convert to fraction form
    8,369.15/12,555.26 = 6,822.70/x
  3. Step 3: Cross multiply
    8,369.15x = 12,555.26 × 6,822.70
  4. Step 4: Simplify right side
    8,369.15x = 85,660,772.40
  5. Step 5: Solve for x
    x = 85,660,772.40/8,369.15
  6. Step 6: Final answer
    x = 10,235.30

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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.