Home / 1,401.14-2,101.71-427.25

Finding the Fourth Proportional to 1,401.14, 2,101.71 and 427.25

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Solution

The fourth proportional to 1,401.14, 2,101.71 and 427.25 is: 640.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,401.14 : 2,101.71 = 427.25 : x
  2. Step 2: Convert to fraction form
    1,401.14/2,101.71 = 427.25/x
  3. Step 3: Cross multiply
    1,401.14x = 2,101.71 × 427.25
  4. Step 4: Simplify right side
    1,401.14x = 897,955.60
  5. Step 5: Solve for x
    x = 897,955.60/1,401.14
  6. Step 6: Final answer
    x = 640.88

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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.