Home / 8,189.40-12,255.30-5,712.60

Finding the Fourth Proportional to 8,189.40, 12,255.30 and 5,712.60

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Solution

The fourth proportional to 8,189.40, 12,255.30 and 5,712.60 is: 8,548.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,189.40 : 12,255.30 = 5,712.60 : x
  2. Step 2: Convert to fraction form
    8,189.40/12,255.30 = 5,712.60/x
  3. Step 3: Cross multiply
    8,189.40x = 12,255.30 × 5,712.60
  4. Step 4: Simplify right side
    8,189.40x = 70,009,626.78
  5. Step 5: Solve for x
    x = 70,009,626.78/8,189.40
  6. Step 6: Final answer
    x = 8,548.81

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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.