Home / 2,142.19-3,213.28-603.19

Finding the Fourth Proportional to 2,142.19, 3,213.28 and 603.19

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Solution

The fourth proportional to 2,142.19, 3,213.28 and 603.19 is: 904.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,142.19 : 3,213.28 = 603.19 : x
  2. Step 2: Convert to fraction form
    2,142.19/3,213.28 = 603.19/x
  3. Step 3: Cross multiply
    2,142.19x = 3,213.28 × 603.19
  4. Step 4: Simplify right side
    2,142.19x = 1,938,218.36
  5. Step 5: Solve for x
    x = 1,938,218.36/2,142.19
  6. Step 6: Final answer
    x = 904.78

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1.5x scale

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.