Home / 1,928.88-2,896.20-1,108.08

Finding the Fourth Proportional to 1,928.88, 2,896.20 and 1,108.08

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Solution

The fourth proportional to 1,928.88, 2,896.20 and 1,108.08 is: 1,663.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,928.88 : 2,896.20 = 1,108.08 : x
  2. Step 2: Convert to fraction form
    1,928.88/2,896.20 = 1,108.08/x
  3. Step 3: Cross multiply
    1,928.88x = 2,896.20 × 1,108.08
  4. Step 4: Simplify right side
    1,928.88x = 3,209,221.30
  5. Step 5: Solve for x
    x = 3,209,221.30/1,928.88
  6. Step 6: Final answer
    x = 1,663.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.