Home / 6,661.17-9,993.74-1,981.33

Finding the Fourth Proportional to 6,661.17, 9,993.74 and 1,981.33

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Solution

The fourth proportional to 6,661.17, 9,993.74 and 1,981.33 is: 2,972.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,661.17 : 9,993.74 = 1,981.33 : x
  2. Step 2: Convert to fraction form
    6,661.17/9,993.74 = 1,981.33/x
  3. Step 3: Cross multiply
    6,661.17x = 9,993.74 × 1,981.33
  4. Step 4: Simplify right side
    6,661.17x = 19,800,886.97
  5. Step 5: Solve for x
    x = 19,800,886.97/6,661.17
  6. Step 6: Final answer
    x = 2,972.59

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Double scale
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Similar ratio
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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.