Home / 8,117.86-12,175.65-3,190.96

Finding the Fourth Proportional to 8,117.86, 12,175.65 and 3,190.96

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Solution

The fourth proportional to 8,117.86, 12,175.65 and 3,190.96 is: 4,785.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,117.86 : 12,175.65 = 3,190.96 : x
  2. Step 2: Convert to fraction form
    8,117.86/12,175.65 = 3,190.96/x
  3. Step 3: Cross multiply
    8,117.86x = 12,175.65 × 3,190.96
  4. Step 4: Simplify right side
    8,117.86x = 38,852,012.12
  5. Step 5: Solve for x
    x = 38,852,012.12/8,117.86
  6. Step 6: Final answer
    x = 4,785.99

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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.