Home / 8,119.76-12,179.73-2,854.55

Finding the Fourth Proportional to 8,119.76, 12,179.73 and 2,854.55

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Solution

The fourth proportional to 8,119.76, 12,179.73 and 2,854.55 is: 4,281.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,119.76 : 12,179.73 = 2,854.55 : x
  2. Step 2: Convert to fraction form
    8,119.76/12,179.73 = 2,854.55/x
  3. Step 3: Cross multiply
    8,119.76x = 12,179.73 × 2,854.55
  4. Step 4: Simplify right side
    8,119.76x = 34,767,587.37
  5. Step 5: Solve for x
    x = 34,767,587.37/8,119.76
  6. Step 6: Final answer
    x = 4,281.85

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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.