Home / 3,405.05-5,102.78-2,708.63

Finding the Fourth Proportional to 3,405.05, 5,102.78 and 2,708.63

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Solution

The fourth proportional to 3,405.05, 5,102.78 and 2,708.63 is: 4,059.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,405.05 : 5,102.78 = 2,708.63 : x
  2. Step 2: Convert to fraction form
    3,405.05/5,102.78 = 2,708.63/x
  3. Step 3: Cross multiply
    3,405.05x = 5,102.78 × 2,708.63
  4. Step 4: Simplify right side
    3,405.05x = 13,821,503.93
  5. Step 5: Solve for x
    x = 13,821,503.93/3,405.05
  6. Step 6: Final answer
    x = 4,059.13

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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.