Home / 4,192.75-6,290.64-1,419.51

Finding the Fourth Proportional to 4,192.75, 6,290.64 and 1,419.51

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Solution

The fourth proportional to 4,192.75, 6,290.64 and 1,419.51 is: 2,129.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,192.75 : 6,290.64 = 1,419.51 : x
  2. Step 2: Convert to fraction form
    4,192.75/6,290.64 = 1,419.51/x
  3. Step 3: Cross multiply
    4,192.75x = 6,290.64 × 1,419.51
  4. Step 4: Simplify right side
    4,192.75x = 8,929,626.39
  5. Step 5: Solve for x
    x = 8,929,626.39/4,192.75
  6. Step 6: Final answer
    x = 2,129.78

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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.