Home / 2,142.19-3,213.29-1,712.08

Finding the Fourth Proportional to 2,142.19, 3,213.29 and 1,712.08

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Solution

The fourth proportional to 2,142.19, 3,213.29 and 1,712.08 is: 2,568.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,142.19 : 3,213.29 = 1,712.08 : x
  2. Step 2: Convert to fraction form
    2,142.19/3,213.29 = 1,712.08/x
  3. Step 3: Cross multiply
    2,142.19x = 3,213.29 × 1,712.08
  4. Step 4: Simplify right side
    2,142.19x = 5,501,409.54
  5. Step 5: Solve for x
    x = 5,501,409.54/2,142.19
  6. Step 6: Final answer
    x = 2,568.12

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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.