Home / 8,078.90-12,119.09-2,235.56

Finding the Fourth Proportional to 8,078.90, 12,119.09 and 2,235.56

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Solution

The fourth proportional to 8,078.90, 12,119.09 and 2,235.56 is: 3,353.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,078.90 : 12,119.09 = 2,235.56 : x
  2. Step 2: Convert to fraction form
    8,078.90/12,119.09 = 2,235.56/x
  3. Step 3: Cross multiply
    8,078.90x = 12,119.09 × 2,235.56
  4. Step 4: Simplify right side
    8,078.90x = 27,092,881.07
  5. Step 5: Solve for x
    x = 27,092,881.07/8,078.90
  6. Step 6: Final answer
    x = 3,353.54

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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.