Home / 5,459.20-8,188.80-2,170.60

Finding the Fourth Proportional to 5,459.20, 8,188.80 and 2,170.60

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Solution

The fourth proportional to 5,459.20, 8,188.80 and 2,170.60 is: 3,255.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,459.20 : 8,188.80 = 2,170.60 : x
  2. Step 2: Convert to fraction form
    5,459.20/8,188.80 = 2,170.60/x
  3. Step 3: Cross multiply
    5,459.20x = 8,188.80 × 2,170.60
  4. Step 4: Simplify right side
    5,459.20x = 17,774,609.28
  5. Step 5: Solve for x
    x = 17,774,609.28/5,459.20
  6. Step 6: Final answer
    x = 3,255.90

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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.