Home / 1,529.72-2,110.92-857.54

Finding the Fourth Proportional to 1,529.72, 2,110.92 and 857.54

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Solution

The fourth proportional to 1,529.72, 2,110.92 and 857.54 is: 1,183.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,529.72 : 2,110.92 = 857.54 : x
  2. Step 2: Convert to fraction form
    1,529.72/2,110.92 = 857.54/x
  3. Step 3: Cross multiply
    1,529.72x = 2,110.92 × 857.54
  4. Step 4: Simplify right side
    1,529.72x = 1,810,198.34
  5. Step 5: Solve for x
    x = 1,810,198.34/1,529.72
  6. Step 6: Final answer
    x = 1,183.35

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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.