Home / 5,459.73-8,190.40-2,172.75

Finding the Fourth Proportional to 5,459.73, 8,190.40 and 2,172.75

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Solution

The fourth proportional to 5,459.73, 8,190.40 and 2,172.75 is: 3,259.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,459.73 : 8,190.40 = 2,172.75 : x
  2. Step 2: Convert to fraction form
    5,459.73/8,190.40 = 2,172.75/x
  3. Step 3: Cross multiply
    5,459.73x = 8,190.40 × 2,172.75
  4. Step 4: Simplify right side
    5,459.73x = 17,795,691.60
  5. Step 5: Solve for x
    x = 17,795,691.60/5,459.73
  6. Step 6: Final answer
    x = 3,259.45

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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.