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Finding the Fourth Proportional to 8,556.70, 12,835.10 and 3,625.42

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Solution

The fourth proportional to 8,556.70, 12,835.10 and 3,625.42 is: 5,438.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,556.70 : 12,835.10 = 3,625.42 : x
  2. Step 2: Convert to fraction form
    8,556.70/12,835.10 = 3,625.42/x
  3. Step 3: Cross multiply
    8,556.70x = 12,835.10 × 3,625.42
  4. Step 4: Simplify right side
    8,556.70x = 46,532,628.24
  5. Step 5: Solve for x
    x = 46,532,628.24/8,556.70
  6. Step 6: Final answer
    x = 5,438.15

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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.