Home / 3,848.39-5,310.79-2,169.80

Finding the Fourth Proportional to 3,848.39, 5,310.79 and 2,169.80

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Solution

The fourth proportional to 3,848.39, 5,310.79 and 2,169.80 is: 2,994.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,848.39 : 5,310.79 = 2,169.80 : x
  2. Step 2: Convert to fraction form
    3,848.39/5,310.79 = 2,169.80/x
  3. Step 3: Cross multiply
    3,848.39x = 5,310.79 × 2,169.80
  4. Step 4: Simplify right side
    3,848.39x = 11,523,365.42
  5. Step 5: Solve for x
    x = 11,523,365.42/3,848.39
  6. Step 6: Final answer
    x = 2,994.33

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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.