Home / 3,639.75-5,460.78-1,299.71

Finding the Fourth Proportional to 3,639.75, 5,460.78 and 1,299.71

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Solution

The fourth proportional to 3,639.75, 5,460.78 and 1,299.71 is: 1,949.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,639.75 : 5,460.78 = 1,299.71 : x
  2. Step 2: Convert to fraction form
    3,639.75/5,460.78 = 1,299.71/x
  3. Step 3: Cross multiply
    3,639.75x = 5,460.78 × 1,299.71
  4. Step 4: Simplify right side
    3,639.75x = 7,097,403.07
  5. Step 5: Solve for x
    x = 7,097,403.07/3,639.75
  6. Step 6: Final answer
    x = 1,949.97

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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.