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Finding the Fourth Proportional to 8,560, 11,818.56 and 5,540.80

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Solution

The fourth proportional to 8,560, 11,818.56 and 5,540.80 is: 7,650.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,560 : 11,818.56 = 5,540.80 : x
  2. Step 2: Convert to fraction form
    8,560/11,818.56 = 5,540.80/x
  3. Step 3: Cross multiply
    8,560x = 11,818.56 × 5,540.80
  4. Step 4: Simplify right side
    8,560x = 65,484,277.25
  5. Step 5: Solve for x
    x = 65,484,277.25/8,560
  6. Step 6: Final answer
    x = 7,650.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.