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Finding the Fourth Proportional to 8,559.66, 12,840.66 and 3,011.70

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Solution

The fourth proportional to 8,559.66, 12,840.66 and 3,011.70 is: 4,517.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,559.66 : 12,840.66 = 3,011.70 : x
  2. Step 2: Convert to fraction form
    8,559.66/12,840.66 = 3,011.70/x
  3. Step 3: Cross multiply
    8,559.66x = 12,840.66 × 3,011.70
  4. Step 4: Simplify right side
    8,559.66x = 38,672,215.72
  5. Step 5: Solve for x
    x = 38,672,215.72/8,559.66
  6. Step 6: Final answer
    x = 4,517.96

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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.