Home / 8,079.71-12,121.54-3,400.07

Finding the Fourth Proportional to 8,079.71, 12,121.54 and 3,400.07

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Solution

The fourth proportional to 8,079.71, 12,121.54 and 3,400.07 is: 5,100.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,079.71 : 12,121.54 = 3,400.07 : x
  2. Step 2: Convert to fraction form
    8,079.71/12,121.54 = 3,400.07/x
  3. Step 3: Cross multiply
    8,079.71x = 12,121.54 × 3,400.07
  4. Step 4: Simplify right side
    8,079.71x = 41,214,015.40
  5. Step 5: Solve for x
    x = 41,214,015.40/8,079.71
  6. Step 6: Final answer
    x = 5,100.93

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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.