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Finding the Fourth Proportional to 8,609.54, 12,913.07 and 2,765.39

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Solution

The fourth proportional to 8,609.54, 12,913.07 and 2,765.39 is: 4,147.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,609.54 : 12,913.07 = 2,765.39 : x
  2. Step 2: Convert to fraction form
    8,609.54/12,913.07 = 2,765.39/x
  3. Step 3: Cross multiply
    8,609.54x = 12,913.07 × 2,765.39
  4. Step 4: Simplify right side
    8,609.54x = 35,709,596.26
  5. Step 5: Solve for x
    x = 35,709,596.26/8,609.54
  6. Step 6: Final answer
    x = 4,147.68

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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.