Home / 6,718.19-10,078.99-3,947.21

Finding the Fourth Proportional to 6,718.19, 10,078.99 and 3,947.21

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Solution

The fourth proportional to 6,718.19, 10,078.99 and 3,947.21 is: 5,921.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,718.19 : 10,078.99 = 3,947.21 : x
  2. Step 2: Convert to fraction form
    6,718.19/10,078.99 = 3,947.21/x
  3. Step 3: Cross multiply
    6,718.19x = 10,078.99 × 3,947.21
  4. Step 4: Simplify right side
    6,718.19x = 39,783,890.12
  5. Step 5: Solve for x
    x = 39,783,890.12/6,718.19
  6. Step 6: Final answer
    x = 5,921.82

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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.