Home / 3,849.79-5,312.69-2,081.39

Finding the Fourth Proportional to 3,849.79, 5,312.69 and 2,081.39

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Solution

The fourth proportional to 3,849.79, 5,312.69 and 2,081.39 is: 2,872.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,849.79 : 5,312.69 = 2,081.39 : x
  2. Step 2: Convert to fraction form
    3,849.79/5,312.69 = 2,081.39/x
  3. Step 3: Cross multiply
    3,849.79x = 5,312.69 × 2,081.39
  4. Step 4: Simplify right side
    3,849.79x = 11,057,779.84
  5. Step 5: Solve for x
    x = 11,057,779.84/3,849.79
  6. Step 6: Final answer
    x = 2,872.31

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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.