Home / 1,351.51-2,027.54-427.16

Finding the Fourth Proportional to 1,351.51, 2,027.54 and 427.16

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Solution

The fourth proportional to 1,351.51, 2,027.54 and 427.16 is: 640.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,351.51 : 2,027.54 = 427.16 : x
  2. Step 2: Convert to fraction form
    1,351.51/2,027.54 = 427.16/x
  3. Step 3: Cross multiply
    1,351.51x = 2,027.54 × 427.16
  4. Step 4: Simplify right side
    1,351.51x = 866,083.99
  5. Step 5: Solve for x
    x = 866,083.99/1,351.51
  6. Step 6: Final answer
    x = 640.83

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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.