Home / 2,836.40-3,914.45-1,577.86

Finding the Fourth Proportional to 2,836.40, 3,914.45 and 1,577.86

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Solution

The fourth proportional to 2,836.40, 3,914.45 and 1,577.86 is: 2,177.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,836.40 : 3,914.45 = 1,577.86 : x
  2. Step 2: Convert to fraction form
    2,836.40/3,914.45 = 1,577.86/x
  3. Step 3: Cross multiply
    2,836.40x = 3,914.45 × 1,577.86
  4. Step 4: Simplify right side
    2,836.40x = 6,176,436.40
  5. Step 5: Solve for x
    x = 6,176,436.40/2,836.40
  6. Step 6: Final answer
    x = 2,177.57

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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.