Home / 3,405.99-5,107.69-1,325.75

Finding the Fourth Proportional to 3,405.99, 5,107.69 and 1,325.75

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Solution

The fourth proportional to 3,405.99, 5,107.69 and 1,325.75 is: 1,988.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,405.99 : 5,107.69 = 1,325.75 : x
  2. Step 2: Convert to fraction form
    3,405.99/5,107.69 = 1,325.75/x
  3. Step 3: Cross multiply
    3,405.99x = 5,107.69 × 1,325.75
  4. Step 4: Simplify right side
    3,405.99x = 6,771,496.14
  5. Step 5: Solve for x
    x = 6,771,496.14/3,405.99
  6. Step 6: Final answer
    x = 1,988.11

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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.