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Finding the Fourth Proportional to 8,509.35, 12,776.18 and 6,662.55

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Solution

The fourth proportional to 8,509.35, 12,776.18 and 6,662.55 is: 10,003.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,509.35 : 12,776.18 = 6,662.55 : x
  2. Step 2: Convert to fraction form
    8,509.35/12,776.18 = 6,662.55/x
  3. Step 3: Cross multiply
    8,509.35x = 12,776.18 × 6,662.55
  4. Step 4: Simplify right side
    8,509.35x = 85,121,904.75
  5. Step 5: Solve for x
    x = 85,121,904.75/8,509.35
  6. Step 6: Final answer
    x = 10,003.34

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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.