Home / 8,091.51-12,140.37-3,164.60

Finding the Fourth Proportional to 8,091.51, 12,140.37 and 3,164.60

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Solution

The fourth proportional to 8,091.51, 12,140.37 and 3,164.60 is: 4,748.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,091.51 : 12,140.37 = 3,164.60 : x
  2. Step 2: Convert to fraction form
    8,091.51/12,140.37 = 3,164.60/x
  3. Step 3: Cross multiply
    8,091.51x = 12,140.37 × 3,164.60
  4. Step 4: Simplify right side
    8,091.51x = 38,419,354.20
  5. Step 5: Solve for x
    x = 38,419,354.20/8,091.51
  6. Step 6: Final answer
    x = 4,748.11

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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.