Home / 8,190.38-12,283.72-3,258.70

Finding the Fourth Proportional to 8,190.38, 12,283.72 and 3,258.70

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Solution

The fourth proportional to 8,190.38, 12,283.72 and 3,258.70 is: 4,887.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,190.38 : 12,283.72 = 3,258.70 : x
  2. Step 2: Convert to fraction form
    8,190.38/12,283.72 = 3,258.70/x
  3. Step 3: Cross multiply
    8,190.38x = 12,283.72 × 3,258.70
  4. Step 4: Simplify right side
    8,190.38x = 40,028,919.51
  5. Step 5: Solve for x
    x = 40,028,919.51/8,190.38
  6. Step 6: Final answer
    x = 4,887.31

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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.