Home / 6,683.40-9,222.03-3,993.78

Finding the Fourth Proportional to 6,683.40, 9,222.03 and 3,993.78

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Solution

The fourth proportional to 6,683.40, 9,222.03 and 3,993.78 is: 5,510.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,683.40 : 9,222.03 = 3,993.78 : x
  2. Step 2: Convert to fraction form
    6,683.40/9,222.03 = 3,993.78/x
  3. Step 3: Cross multiply
    6,683.40x = 9,222.03 × 3,993.78
  4. Step 4: Simplify right side
    6,683.40x = 36,830,758.97
  5. Step 5: Solve for x
    x = 36,830,758.97/6,683.40
  6. Step 6: Final answer
    x = 5,510.78

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.