Home / 8,076.12-12,111.04-3,145.08

Finding the Fourth Proportional to 8,076.12, 12,111.04 and 3,145.08

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Solution

The fourth proportional to 8,076.12, 12,111.04 and 3,145.08 is: 4,716.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,076.12 : 12,111.04 = 3,145.08 : x
  2. Step 2: Convert to fraction form
    8,076.12/12,111.04 = 3,145.08/x
  3. Step 3: Cross multiply
    8,076.12x = 12,111.04 × 3,145.08
  4. Step 4: Simplify right side
    8,076.12x = 38,090,189.68
  5. Step 5: Solve for x
    x = 38,090,189.68/8,076.12
  6. Step 6: Final answer
    x = 4,716.40

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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.