Home / 5,459.85-8,189.77-2,172.97

Finding the Fourth Proportional to 5,459.85, 8,189.77 and 2,172.97

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Solution

The fourth proportional to 5,459.85, 8,189.77 and 2,172.97 is: 3,259.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,459.85 : 8,189.77 = 2,172.97 : x
  2. Step 2: Convert to fraction form
    5,459.85/8,189.77 = 2,172.97/x
  3. Step 3: Cross multiply
    5,459.85x = 8,189.77 × 2,172.97
  4. Step 4: Simplify right side
    5,459.85x = 17,796,098.61
  5. Step 5: Solve for x
    x = 17,796,098.61/5,459.85
  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.