Home / 2,809.36-3,877.20-1,928.08

Finding the Fourth Proportional to 2,809.36, 3,877.20 and 1,928.08

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Solution

The fourth proportional to 2,809.36, 3,877.20 and 1,928.08 is: 2,660.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,809.36 : 3,877.20 = 1,928.08 : x
  2. Step 2: Convert to fraction form
    2,809.36/3,877.20 = 1,928.08/x
  3. Step 3: Cross multiply
    2,809.36x = 3,877.20 × 1,928.08
  4. Step 4: Simplify right side
    2,809.36x = 7,475,551.78
  5. Step 5: Solve for x
    x = 7,475,551.78/2,809.36
  6. Step 6: Final answer
    x = 2,660.94

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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.