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Finding the Fourth Proportional to 8,795.40, 13,205.90 and 6,209.80

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Solution

The fourth proportional to 8,795.40, 13,205.90 and 6,209.80 is: 9,323.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,795.40 : 13,205.90 = 6,209.80 : x
  2. Step 2: Convert to fraction form
    8,795.40/13,205.90 = 6,209.80/x
  3. Step 3: Cross multiply
    8,795.40x = 13,205.90 × 6,209.80
  4. Step 4: Simplify right side
    8,795.40x = 82,005,997.82
  5. Step 5: Solve for x
    x = 82,005,997.82/8,795.40
  6. Step 6: Final answer
    x = 9,323.74

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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.