Home / 3,419.45-5,129.13-2,085.64

Finding the Fourth Proportional to 3,419.45, 5,129.13 and 2,085.64

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Solution

The fourth proportional to 3,419.45, 5,129.13 and 2,085.64 is: 3,128.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,419.45 : 5,129.13 = 2,085.64 : x
  2. Step 2: Convert to fraction form
    3,419.45/5,129.13 = 2,085.64/x
  3. Step 3: Cross multiply
    3,419.45x = 5,129.13 × 2,085.64
  4. Step 4: Simplify right side
    3,419.45x = 10,697,518.69
  5. Step 5: Solve for x
    x = 10,697,518.69/3,419.45
  6. Step 6: Final answer
    x = 3,128.43

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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.