Home / 10,115.83-15,171.58-3,188.71

Finding the Fourth Proportional to 10,115.83, 15,171.58 and 3,188.71

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Solution

The fourth proportional to 10,115.83, 15,171.58 and 3,188.71 is: 4,782.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,115.83 : 15,171.58 = 3,188.71 : x
  2. Step 2: Convert to fraction form
    10,115.83/15,171.58 = 3,188.71/x
  3. Step 3: Cross multiply
    10,115.83x = 15,171.58 × 3,188.71
  4. Step 4: Simplify right side
    10,115.83x = 48,377,768.86
  5. Step 5: Solve for x
    x = 48,377,768.86/10,115.83
  6. Step 6: Final answer
    x = 4,782.38

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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.