Home / 8,112.15-12,170.32-2,565.68

Finding the Fourth Proportional to 8,112.15, 12,170.32 and 2,565.68

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Solution

The fourth proportional to 8,112.15, 12,170.32 and 2,565.68 is: 3,849.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,112.15 : 12,170.32 = 2,565.68 : x
  2. Step 2: Convert to fraction form
    8,112.15/12,170.32 = 2,565.68/x
  3. Step 3: Cross multiply
    8,112.15x = 12,170.32 × 2,565.68
  4. Step 4: Simplify right side
    8,112.15x = 31,225,079.35
  5. Step 5: Solve for x
    x = 31,225,079.35/8,112.15
  6. Step 6: Final answer
    x = 3,849.17

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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.