Home / 5,120.86-7,674.90-2,195.77

Finding the Fourth Proportional to 5,120.86, 7,674.90 and 2,195.77

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Solution

The fourth proportional to 5,120.86, 7,674.90 and 2,195.77 is: 3,290.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,120.86 : 7,674.90 = 2,195.77 : x
  2. Step 2: Convert to fraction form
    5,120.86/7,674.90 = 2,195.77/x
  3. Step 3: Cross multiply
    5,120.86x = 7,674.90 × 2,195.77
  4. Step 4: Simplify right side
    5,120.86x = 16,852,315.17
  5. Step 5: Solve for x
    x = 16,852,315.17/5,120.86
  6. Step 6: Final answer
    x = 3,290.92

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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.