Home / 6,917.40-10,378.94-3,998.16

Finding the Fourth Proportional to 6,917.40, 10,378.94 and 3,998.16

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Solution

The fourth proportional to 6,917.40, 10,378.94 and 3,998.16 is: 5,998.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,917.40 : 10,378.94 = 3,998.16 : x
  2. Step 2: Convert to fraction form
    6,917.40/10,378.94 = 3,998.16/x
  3. Step 3: Cross multiply
    6,917.40x = 10,378.94 × 3,998.16
  4. Step 4: Simplify right side
    6,917.40x = 41,496,642.76
  5. Step 5: Solve for x
    x = 41,496,642.76/6,917.40
  6. Step 6: Final answer
    x = 5,998.88

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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.