Home / 2,836.40-3,914.46-1,577.70

Finding the Fourth Proportional to 2,836.40, 3,914.46 and 1,577.70

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Solution

The fourth proportional to 2,836.40, 3,914.46 and 1,577.70 is: 2,177.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,836.40 : 3,914.46 = 1,577.70 : x
  2. Step 2: Convert to fraction form
    2,836.40/3,914.46 = 1,577.70/x
  3. Step 3: Cross multiply
    2,836.40x = 3,914.46 × 1,577.70
  4. Step 4: Simplify right side
    2,836.40x = 6,175,843.54
  5. Step 5: Solve for x
    x = 6,175,843.54/2,836.40
  6. Step 6: Final answer
    x = 2,177.36

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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.