Home / 1,928.64-2,906.79-1,821.35

Finding the Fourth Proportional to 1,928.64, 2,906.79 and 1,821.35

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Solution

The fourth proportional to 1,928.64, 2,906.79 and 1,821.35 is: 2,745.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,928.64 : 2,906.79 = 1,821.35 : x
  2. Step 2: Convert to fraction form
    1,928.64/2,906.79 = 1,821.35/x
  3. Step 3: Cross multiply
    1,928.64x = 2,906.79 × 1,821.35
  4. Step 4: Simplify right side
    1,928.64x = 5,294,267.43
  5. Step 5: Solve for x
    x = 5,294,267.43/1,928.64
  6. Step 6: Final answer
    x = 2,745.08

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.