Home / 1,961.36-2,707.08-1,122.02

Finding the Fourth Proportional to 1,961.36, 2,707.08 and 1,122.02

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Solution

The fourth proportional to 1,961.36, 2,707.08 and 1,122.02 is: 1,548.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,961.36 : 2,707.08 = 1,122.02 : x
  2. Step 2: Convert to fraction form
    1,961.36/2,707.08 = 1,122.02/x
  3. Step 3: Cross multiply
    1,961.36x = 2,707.08 × 1,122.02
  4. Step 4: Simplify right side
    1,961.36x = 3,037,397.90
  5. Step 5: Solve for x
    x = 3,037,397.90/1,961.36
  6. Step 6: Final answer
    x = 1,548.62

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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.