Home / 3,914.07-5,401.40-2,145.62

Finding the Fourth Proportional to 3,914.07, 5,401.40 and 2,145.62

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Solution

The fourth proportional to 3,914.07, 5,401.40 and 2,145.62 is: 2,960.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,914.07 : 5,401.40 = 2,145.62 : x
  2. Step 2: Convert to fraction form
    3,914.07/5,401.40 = 2,145.62/x
  3. Step 3: Cross multiply
    3,914.07x = 5,401.40 × 2,145.62
  4. Step 4: Simplify right side
    3,914.07x = 11,589,314.13
  5. Step 5: Solve for x
    x = 11,589,314.13/3,914.07
  6. Step 6: Final answer
    x = 2,960.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.