Home / 7,792.86-11,685.12-3,405.18

Finding the Fourth Proportional to 7,792.86, 11,685.12 and 3,405.18

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Solution

The fourth proportional to 7,792.86, 11,685.12 and 3,405.18 is: 5,105.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,792.86 : 11,685.12 = 3,405.18 : x
  2. Step 2: Convert to fraction form
    7,792.86/11,685.12 = 3,405.18/x
  3. Step 3: Cross multiply
    7,792.86x = 11,685.12 × 3,405.18
  4. Step 4: Simplify right side
    7,792.86x = 39,789,936.92
  5. Step 5: Solve for x
    x = 39,789,936.92/7,792.86
  6. Step 6: Final answer
    x = 5,105.95

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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.