Home / 1,351.70-2,027.55-427.33

Finding the Fourth Proportional to 1,351.70, 2,027.55 and 427.33

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Solution

The fourth proportional to 1,351.70, 2,027.55 and 427.33 is: 641.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,351.70 : 2,027.55 = 427.33 : x
  2. Step 2: Convert to fraction form
    1,351.70/2,027.55 = 427.33/x
  3. Step 3: Cross multiply
    1,351.70x = 2,027.55 × 427.33
  4. Step 4: Simplify right side
    1,351.70x = 866,432.94
  5. Step 5: Solve for x
    x = 866,432.94/1,351.70
  6. Step 6: Final answer
    x = 641.00

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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.