Home / 10,205.26-15,305.94-2,807.86

Finding the Fourth Proportional to 10,205.26, 15,305.94 and 2,807.86

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Solution

The fourth proportional to 10,205.26, 15,305.94 and 2,807.86 is: 4,211.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,205.26 : 15,305.94 = 2,807.86 : x
  2. Step 2: Convert to fraction form
    10,205.26/15,305.94 = 2,807.86/x
  3. Step 3: Cross multiply
    10,205.26x = 15,305.94 × 2,807.86
  4. Step 4: Simplify right side
    10,205.26x = 42,976,936.69
  5. Step 5: Solve for x
    x = 42,976,936.69/10,205.26
  6. Step 6: Final answer
    x = 4,211.25

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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.