Home / 5,489.08-8,235.15-1,790.86

Finding the Fourth Proportional to 5,489.08, 8,235.15 and 1,790.86

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Solution

The fourth proportional to 5,489.08, 8,235.15 and 1,790.86 is: 2,686.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,489.08 : 8,235.15 = 1,790.86 : x
  2. Step 2: Convert to fraction form
    5,489.08/8,235.15 = 1,790.86/x
  3. Step 3: Cross multiply
    5,489.08x = 8,235.15 × 1,790.86
  4. Step 4: Simplify right side
    5,489.08x = 14,747,998.94
  5. Step 5: Solve for x
    x = 14,747,998.94/5,489.08
  6. Step 6: Final answer
    x = 2,686.79

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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.