Home / 8,190.24-12,290.62-8,160

Finding the Fourth Proportional to 8,190.24, 12,290.62 and 8,160

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Solution

The fourth proportional to 8,190.24, 12,290.62 and 8,160 is: 12,245.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,190.24 : 12,290.62 = 8,160 : x
  2. Step 2: Convert to fraction form
    8,190.24/12,290.62 = 8,160/x
  3. Step 3: Cross multiply
    8,190.24x = 12,290.62 × 8,160
  4. Step 4: Simplify right side
    8,190.24x = 100,291,459.20
  5. Step 5: Solve for x
    x = 100,291,459.20/8,190.24
  6. Step 6: Final answer
    x = 12,245.24

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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.