Home / 3,179.81-4,385.79-1,853.43

Finding the Fourth Proportional to 3,179.81, 4,385.79 and 1,853.43

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Solution

The fourth proportional to 3,179.81, 4,385.79 and 1,853.43 is: 2,556.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,179.81 : 4,385.79 = 1,853.43 : x
  2. Step 2: Convert to fraction form
    3,179.81/4,385.79 = 1,853.43/x
  3. Step 3: Cross multiply
    3,179.81x = 4,385.79 × 1,853.43
  4. Step 4: Simplify right side
    3,179.81x = 8,128,754.76
  5. Step 5: Solve for x
    x = 8,128,754.76/3,179.81
  6. Step 6: Final answer
    x = 2,556.37

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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.