Home / 3,815.45-5,718.56-1,619.57

Finding the Fourth Proportional to 3,815.45, 5,718.56 and 1,619.57

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Solution

The fourth proportional to 3,815.45, 5,718.56 and 1,619.57 is: 2,427.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,815.45 : 5,718.56 = 1,619.57 : x
  2. Step 2: Convert to fraction form
    3,815.45/5,718.56 = 1,619.57/x
  3. Step 3: Cross multiply
    3,815.45x = 5,718.56 × 1,619.57
  4. Step 4: Simplify right side
    3,815.45x = 9,261,604.17
  5. Step 5: Solve for x
    x = 9,261,604.17/3,815.45
  6. Step 6: Final answer
    x = 2,427.39

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1.5x scale

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.