Home / 5,459.40-8,188.56-2,171.61

Finding the Fourth Proportional to 5,459.40, 8,188.56 and 2,171.61

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Solution

The fourth proportional to 5,459.40, 8,188.56 and 2,171.61 is: 3,257.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,459.40 : 8,188.56 = 2,171.61 : x
  2. Step 2: Convert to fraction form
    5,459.40/8,188.56 = 2,171.61/x
  3. Step 3: Cross multiply
    5,459.40x = 8,188.56 × 2,171.61
  4. Step 4: Simplify right side
    5,459.40x = 17,782,358.78
  5. Step 5: Solve for x
    x = 17,782,358.78/5,459.40
  6. Step 6: Final answer
    x = 3,257.20

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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.