Home / 5,417.60-8,131.20-2,786.96

Finding the Fourth Proportional to 5,417.60, 8,131.20 and 2,786.96

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Solution

The fourth proportional to 5,417.60, 8,131.20 and 2,786.96 is: 4,182.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,417.60 : 8,131.20 = 2,786.96 : x
  2. Step 2: Convert to fraction form
    5,417.60/8,131.20 = 2,786.96/x
  3. Step 3: Cross multiply
    5,417.60x = 8,131.20 × 2,786.96
  4. Step 4: Simplify right side
    5,417.60x = 22,661,329.15
  5. Step 5: Solve for x
    x = 22,661,329.15/5,417.60
  6. Step 6: Final answer
    x = 4,182.91

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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.