Home / 8,102.12-12,145.98-3,175.16

Finding the Fourth Proportional to 8,102.12, 12,145.98 and 3,175.16

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Solution

The fourth proportional to 8,102.12, 12,145.98 and 3,175.16 is: 4,759.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,102.12 : 12,145.98 = 3,175.16 : x
  2. Step 2: Convert to fraction form
    8,102.12/12,145.98 = 3,175.16/x
  3. Step 3: Cross multiply
    8,102.12x = 12,145.98 × 3,175.16
  4. Step 4: Simplify right side
    8,102.12x = 38,565,429.86
  5. Step 5: Solve for x
    x = 38,565,429.86/8,102.12
  6. Step 6: Final answer
    x = 4,759.92

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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.