Home / 8,138.55-12,189.37-5,176.99

Finding the Fourth Proportional to 8,138.55, 12,189.37 and 5,176.99

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Solution

The fourth proportional to 8,138.55, 12,189.37 and 5,176.99 is: 7,753.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,138.55 : 12,189.37 = 5,176.99 : x
  2. Step 2: Convert to fraction form
    8,138.55/12,189.37 = 5,176.99/x
  3. Step 3: Cross multiply
    8,138.55x = 12,189.37 × 5,176.99
  4. Step 4: Simplify right side
    8,138.55x = 63,104,246.60
  5. Step 5: Solve for x
    x = 63,104,246.60/8,138.55
  6. Step 6: Final answer
    x = 7,753.75

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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.