Home / 3,429.79-4,734.87-2,172.16

Finding the Fourth Proportional to 3,429.79, 4,734.87 and 2,172.16

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Solution

The fourth proportional to 3,429.79, 4,734.87 and 2,172.16 is: 2,998.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,429.79 : 4,734.87 = 2,172.16 : x
  2. Step 2: Convert to fraction form
    3,429.79/4,734.87 = 2,172.16/x
  3. Step 3: Cross multiply
    3,429.79x = 4,734.87 × 2,172.16
  4. Step 4: Simplify right side
    3,429.79x = 10,284,871.54
  5. Step 5: Solve for x
    x = 10,284,871.54/3,429.79
  6. Step 6: Final answer
    x = 2,998.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.