Home / 5,108.30-7,662.45-2,186.90

Finding the Fourth Proportional to 5,108.30, 7,662.45 and 2,186.90

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Solution

The fourth proportional to 5,108.30, 7,662.45 and 2,186.90 is: 3,280.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,108.30 : 7,662.45 = 2,186.90 : x
  2. Step 2: Convert to fraction form
    5,108.30/7,662.45 = 2,186.90/x
  3. Step 3: Cross multiply
    5,108.30x = 7,662.45 × 2,186.90
  4. Step 4: Simplify right side
    5,108.30x = 16,757,011.91
  5. Step 5: Solve for x
    x = 16,757,011.91/5,108.30
  6. Step 6: Final answer
    x = 3,280.35

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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.