Home / 3,849.78-5,312.68-2,171.18

Finding the Fourth Proportional to 3,849.78, 5,312.68 and 2,171.18

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Solution

The fourth proportional to 3,849.78, 5,312.68 and 2,171.18 is: 2,996.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,849.78 : 5,312.68 = 2,171.18 : x
  2. Step 2: Convert to fraction form
    3,849.78/5,312.68 = 2,171.18/x
  3. Step 3: Cross multiply
    3,849.78x = 5,312.68 × 2,171.18
  4. Step 4: Simplify right side
    3,849.78x = 11,534,771.35
  5. Step 5: Solve for x
    x = 11,534,771.35/3,849.78
  6. Step 6: Final answer
    x = 2,996.22

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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.