Home / 8,685.20-13,025.07-3,137.82

Finding the Fourth Proportional to 8,685.20, 13,025.07 and 3,137.82

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Solution

The fourth proportional to 8,685.20, 13,025.07 and 3,137.82 is: 4,705.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,685.20 : 13,025.07 = 3,137.82 : x
  2. Step 2: Convert to fraction form
    8,685.20/13,025.07 = 3,137.82/x
  3. Step 3: Cross multiply
    8,685.20x = 13,025.07 × 3,137.82
  4. Step 4: Simplify right side
    8,685.20x = 40,870,325.15
  5. Step 5: Solve for x
    x = 40,870,325.15/8,685.20
  6. Step 6: Final answer
    x = 4,705.75

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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.