Home / 1,401.30-2,102.04-427.32

Finding the Fourth Proportional to 1,401.30, 2,102.04 and 427.32

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Solution

The fourth proportional to 1,401.30, 2,102.04 and 427.32 is: 641.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,401.30 : 2,102.04 = 427.32 : x
  2. Step 2: Convert to fraction form
    1,401.30/2,102.04 = 427.32/x
  3. Step 3: Cross multiply
    1,401.30x = 2,102.04 × 427.32
  4. Step 4: Simplify right side
    1,401.30x = 898,243.73
  5. Step 5: Solve for x
    x = 898,243.73/1,401.30
  6. Step 6: Final answer
    x = 641.01

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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.