Home / 8,119.19-12,176.69-3,188.85

Finding the Fourth Proportional to 8,119.19, 12,176.69 and 3,188.85

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Solution

The fourth proportional to 8,119.19, 12,176.69 and 3,188.85 is: 4,782.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,119.19 : 12,176.69 = 3,188.85 : x
  2. Step 2: Convert to fraction form
    8,119.19/12,176.69 = 3,188.85/x
  3. Step 3: Cross multiply
    8,119.19x = 12,176.69 × 3,188.85
  4. Step 4: Simplify right side
    8,119.19x = 38,829,621.96
  5. Step 5: Solve for x
    x = 38,829,621.96/8,119.19
  6. Step 6: Final answer
    x = 4,782.45

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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.