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Finding the Fourth Proportional to 8,358.16, 12,537.86 and 2,811.48

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Solution

The fourth proportional to 8,358.16, 12,537.86 and 2,811.48 is: 4,217.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,358.16 : 12,537.86 = 2,811.48 : x
  2. Step 2: Convert to fraction form
    8,358.16/12,537.86 = 2,811.48/x
  3. Step 3: Cross multiply
    8,358.16x = 12,537.86 × 2,811.48
  4. Step 4: Simplify right side
    8,358.16x = 35,249,942.63
  5. Step 5: Solve for x
    x = 35,249,942.63/8,358.16
  6. Step 6: Final answer
    x = 4,217.43

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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.