Home / 3,914.16-5,401.55-2,145.72

Finding the Fourth Proportional to 3,914.16, 5,401.55 and 2,145.72

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Solution

The fourth proportional to 3,914.16, 5,401.55 and 2,145.72 is: 2,961.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,914.16 : 5,401.55 = 2,145.72 : x
  2. Step 2: Convert to fraction form
    3,914.16/5,401.55 = 2,145.72/x
  3. Step 3: Cross multiply
    3,914.16x = 5,401.55 × 2,145.72
  4. Step 4: Simplify right side
    3,914.16x = 11,590,239.49
  5. Step 5: Solve for x
    x = 11,590,239.49/3,914.16
  6. Step 6: Final answer
    x = 2,961.11

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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.