Home / 5,108.12-7,656.60-2,188.16

Finding the Fourth Proportional to 5,108.12, 7,656.60 and 2,188.16

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Solution

The fourth proportional to 5,108.12, 7,656.60 and 2,188.16 is: 3,279.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,108.12 : 7,656.60 = 2,188.16 : x
  2. Step 2: Convert to fraction form
    5,108.12/7,656.60 = 2,188.16/x
  3. Step 3: Cross multiply
    5,108.12x = 7,656.60 × 2,188.16
  4. Step 4: Simplify right side
    5,108.12x = 16,753,865.86
  5. Step 5: Solve for x
    x = 16,753,865.86/5,108.12
  6. Step 6: Final answer
    x = 3,279.85

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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.