Home / 3,112.09-4,668.15-1,381.93

Finding the Fourth Proportional to 3,112.09, 4,668.15 and 1,381.93

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Solution

The fourth proportional to 3,112.09, 4,668.15 and 1,381.93 is: 2,072.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,112.09 : 4,668.15 = 1,381.93 : x
  2. Step 2: Convert to fraction form
    3,112.09/4,668.15 = 1,381.93/x
  3. Step 3: Cross multiply
    3,112.09x = 4,668.15 × 1,381.93
  4. Step 4: Simplify right side
    3,112.09x = 6,451,056.53
  5. Step 5: Solve for x
    x = 6,451,056.53/3,112.09
  6. Step 6: Final answer
    x = 2,072.90

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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.