Home / 1,401.25-2,102.33-427.35

Finding the Fourth Proportional to 1,401.25, 2,102.33 and 427.35

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Solution

The fourth proportional to 1,401.25, 2,102.33 and 427.35 is: 641.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,401.25 : 2,102.33 = 427.35 : x
  2. Step 2: Convert to fraction form
    1,401.25/2,102.33 = 427.35/x
  3. Step 3: Cross multiply
    1,401.25x = 2,102.33 × 427.35
  4. Step 4: Simplify right side
    1,401.25x = 898,430.73
  5. Step 5: Solve for x
    x = 898,430.73/1,401.25
  6. Step 6: Final answer
    x = 641.16

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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.