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Finding the Fourth Proportional to 8,559, 12,840.66 and 2,403

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Solution

The fourth proportional to 8,559, 12,840.66 and 2,403 is: 3,605.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,559 : 12,840.66 = 2,403 : x
  2. Step 2: Convert to fraction form
    8,559/12,840.66 = 2,403/x
  3. Step 3: Cross multiply
    8,559x = 12,840.66 × 2,403
  4. Step 4: Simplify right side
    8,559x = 30,856,105.98
  5. Step 5: Solve for x
    x = 30,856,105.98/8,559
  6. Step 6: Final answer
    x = 3,605.11

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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.