Home / 3,419.75-5,127.58-1,661.30

Finding the Fourth Proportional to 3,419.75, 5,127.58 and 1,661.30

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Solution

The fourth proportional to 3,419.75, 5,127.58 and 1,661.30 is: 2,490.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,419.75 : 5,127.58 = 1,661.30 : x
  2. Step 2: Convert to fraction form
    3,419.75/5,127.58 = 1,661.30/x
  3. Step 3: Cross multiply
    3,419.75x = 5,127.58 × 1,661.30
  4. Step 4: Simplify right side
    3,419.75x = 8,518,425.09
  5. Step 5: Solve for x
    x = 8,518,425.09/3,419.75
  6. Step 6: Final answer
    x = 2,490.95

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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.