Home / 8,119.56-12,179.34-2,854.28

Finding the Fourth Proportional to 8,119.56, 12,179.34 and 2,854.28

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Solution

The fourth proportional to 8,119.56, 12,179.34 and 2,854.28 is: 4,281.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,119.56 : 12,179.34 = 2,854.28 : x
  2. Step 2: Convert to fraction form
    8,119.56/12,179.34 = 2,854.28/x
  3. Step 3: Cross multiply
    8,119.56x = 12,179.34 × 2,854.28
  4. Step 4: Simplify right side
    8,119.56x = 34,763,246.58
  5. Step 5: Solve for x
    x = 34,763,246.58/8,119.56
  6. Step 6: Final answer
    x = 4,281.42

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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.