Home / 1,401.16-2,101.56-427.36

Finding the Fourth Proportional to 1,401.16, 2,101.56 and 427.36

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Solution

The fourth proportional to 1,401.16, 2,101.56 and 427.36 is: 640.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,401.16 : 2,101.56 = 427.36 : x
  2. Step 2: Convert to fraction form
    1,401.16/2,101.56 = 427.36/x
  3. Step 3: Cross multiply
    1,401.16x = 2,101.56 × 427.36
  4. Step 4: Simplify right side
    1,401.16x = 898,122.68
  5. Step 5: Solve for x
    x = 898,122.68/1,401.16
  6. Step 6: Final answer
    x = 640.99

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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.