Home / 3,849.42-5,312.16-2,170.80

Finding the Fourth Proportional to 3,849.42, 5,312.16 and 2,170.80

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Solution

The fourth proportional to 3,849.42, 5,312.16 and 2,170.80 is: 2,995.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,849.42 : 5,312.16 = 2,170.80 : x
  2. Step 2: Convert to fraction form
    3,849.42/5,312.16 = 2,170.80/x
  3. Step 3: Cross multiply
    3,849.42x = 5,312.16 × 2,170.80
  4. Step 4: Simplify right side
    3,849.42x = 11,531,636.93
  5. Step 5: Solve for x
    x = 11,531,636.93/3,849.42
  6. Step 6: Final answer
    x = 2,995.68

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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.