Home / 2,142.26-3,213.50-603.38

Finding the Fourth Proportional to 2,142.26, 3,213.50 and 603.38

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Solution

The fourth proportional to 2,142.26, 3,213.50 and 603.38 is: 905.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,142.26 : 3,213.50 = 603.38 : x
  2. Step 2: Convert to fraction form
    2,142.26/3,213.50 = 603.38/x
  3. Step 3: Cross multiply
    2,142.26x = 3,213.50 × 603.38
  4. Step 4: Simplify right side
    2,142.26x = 1,938,961.63
  5. Step 5: Solve for x
    x = 1,938,961.63/2,142.26
  6. Step 6: Final answer
    x = 905.10

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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.