Home / 8,186.16-12,281.19-2,640.03

Finding the Fourth Proportional to 8,186.16, 12,281.19 and 2,640.03

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Solution

The fourth proportional to 8,186.16, 12,281.19 and 2,640.03 is: 3,960.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,186.16 : 12,281.19 = 2,640.03 : x
  2. Step 2: Convert to fraction form
    8,186.16/12,281.19 = 2,640.03/x
  3. Step 3: Cross multiply
    8,186.16x = 12,281.19 × 2,640.03
  4. Step 4: Simplify right side
    8,186.16x = 32,422,710.04
  5. Step 5: Solve for x
    x = 32,422,710.04/8,186.16
  6. Step 6: Final answer
    x = 3,960.67

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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.