Home / 3,849.89-5,312.88-2,171.13

Finding the Fourth Proportional to 3,849.89, 5,312.88 and 2,171.13

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Solution

The fourth proportional to 3,849.89, 5,312.88 and 2,171.13 is: 2,996.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,849.89 : 5,312.88 = 2,171.13 : x
  2. Step 2: Convert to fraction form
    3,849.89/5,312.88 = 2,171.13/x
  3. Step 3: Cross multiply
    3,849.89x = 5,312.88 × 2,171.13
  4. Step 4: Simplify right side
    3,849.89x = 11,534,942.30
  5. Step 5: Solve for x
    x = 11,534,942.30/3,849.89
  6. Step 6: Final answer
    x = 2,996.17

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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.