Home / 6,920.16-10,382.16-3,993.12

Finding the Fourth Proportional to 6,920.16, 10,382.16 and 3,993.12

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Solution

The fourth proportional to 6,920.16, 10,382.16 and 3,993.12 is: 5,990.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,920.16 : 10,382.16 = 3,993.12 : x
  2. Step 2: Convert to fraction form
    6,920.16/10,382.16 = 3,993.12/x
  3. Step 3: Cross multiply
    6,920.16x = 10,382.16 × 3,993.12
  4. Step 4: Simplify right side
    6,920.16x = 41,457,210.74
  5. Step 5: Solve for x
    x = 41,457,210.74/6,920.16
  6. Step 6: Final answer
    x = 5,990.79

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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.