Home / 5,459.55-8,190.71-2,172.63

Finding the Fourth Proportional to 5,459.55, 8,190.71 and 2,172.63

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Solution

The fourth proportional to 5,459.55, 8,190.71 and 2,172.63 is: 3,259.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,459.55 : 8,190.71 = 2,172.63 : x
  2. Step 2: Convert to fraction form
    5,459.55/8,190.71 = 2,172.63/x
  3. Step 3: Cross multiply
    5,459.55x = 8,190.71 × 2,172.63
  4. Step 4: Simplify right side
    5,459.55x = 17,795,371.40
  5. Step 5: Solve for x
    x = 17,795,371.40/5,459.55
  6. Step 6: Final answer
    x = 3,259.49

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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.