Home / 2,825.15-3,899.91-1,705.86

Finding the Fourth Proportional to 2,825.15, 3,899.91 and 1,705.86

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Solution

The fourth proportional to 2,825.15, 3,899.91 and 1,705.86 is: 2,354.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,825.15 : 3,899.91 = 1,705.86 : x
  2. Step 2: Convert to fraction form
    2,825.15/3,899.91 = 1,705.86/x
  3. Step 3: Cross multiply
    2,825.15x = 3,899.91 × 1,705.86
  4. Step 4: Simplify right side
    2,825.15x = 6,652,672.44
  5. Step 5: Solve for x
    x = 6,652,672.44/2,825.15
  6. Step 6: Final answer
    x = 2,354.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.