Home / 1,921.92-2,652.26-1,165.45

Finding the Fourth Proportional to 1,921.92, 2,652.26 and 1,165.45

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Solution

The fourth proportional to 1,921.92, 2,652.26 and 1,165.45 is: 1,608.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,921.92 : 2,652.26 = 1,165.45 : x
  2. Step 2: Convert to fraction form
    1,921.92/2,652.26 = 1,165.45/x
  3. Step 3: Cross multiply
    1,921.92x = 2,652.26 × 1,165.45
  4. Step 4: Simplify right side
    1,921.92x = 3,091,076.42
  5. Step 5: Solve for x
    x = 3,091,076.42/1,921.92
  6. Step 6: Final answer
    x = 1,608.33

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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.