Home / 5,456.61-8,189.60-2,172.02

Finding the Fourth Proportional to 5,456.61, 8,189.60 and 2,172.02

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Solution

The fourth proportional to 5,456.61, 8,189.60 and 2,172.02 is: 3,259.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,456.61 : 8,189.60 = 2,172.02 : x
  2. Step 2: Convert to fraction form
    5,456.61/8,189.60 = 2,172.02/x
  3. Step 3: Cross multiply
    5,456.61x = 8,189.60 × 2,172.02
  4. Step 4: Simplify right side
    5,456.61x = 17,787,923.18
  5. Step 5: Solve for x
    x = 17,787,923.18/5,456.61
  6. Step 6: Final answer
    x = 3,259.89

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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.