Home / 10,207.09-15,310.64-2,811.62

Finding the Fourth Proportional to 10,207.09, 15,310.64 and 2,811.62

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Solution

The fourth proportional to 10,207.09, 15,310.64 and 2,811.62 is: 4,217.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,207.09 : 15,310.64 = 2,811.62 : x
  2. Step 2: Convert to fraction form
    10,207.09/15,310.64 = 2,811.62/x
  3. Step 3: Cross multiply
    10,207.09x = 15,310.64 × 2,811.62
  4. Step 4: Simplify right side
    10,207.09x = 43,047,725.86
  5. Step 5: Solve for x
    x = 43,047,725.86/10,207.09
  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.