Home / 3,810.75-5,716.07-1,345.21

Finding the Fourth Proportional to 3,810.75, 5,716.07 and 1,345.21

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Solution

The fourth proportional to 3,810.75, 5,716.07 and 1,345.21 is: 2,017.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,810.75 : 5,716.07 = 1,345.21 : x
  2. Step 2: Convert to fraction form
    3,810.75/5,716.07 = 1,345.21/x
  3. Step 3: Cross multiply
    3,810.75x = 5,716.07 × 1,345.21
  4. Step 4: Simplify right side
    3,810.75x = 7,689,298.55
  5. Step 5: Solve for x
    x = 7,689,298.55/3,810.75
  6. Step 6: Final answer
    x = 2,017.79

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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.