Home / 8,108.70-12,175.20-5,654.40

Finding the Fourth Proportional to 8,108.70, 12,175.20 and 5,654.40

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Solution

The fourth proportional to 8,108.70, 12,175.20 and 5,654.40 is: 8,490.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,108.70 : 12,175.20 = 5,654.40 : x
  2. Step 2: Convert to fraction form
    8,108.70/12,175.20 = 5,654.40/x
  3. Step 3: Cross multiply
    8,108.70x = 12,175.20 × 5,654.40
  4. Step 4: Simplify right side
    8,108.70x = 68,843,450.88
  5. Step 5: Solve for x
    x = 68,843,450.88/8,108.70
  6. Step 6: Final answer
    x = 8,490.07

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1.5x scale

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.