Home / 5,458.81-8,188.26-2,172.74

Finding the Fourth Proportional to 5,458.81, 8,188.26 and 2,172.74

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Solution

The fourth proportional to 5,458.81, 8,188.26 and 2,172.74 is: 3,259.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,458.81 : 8,188.26 = 2,172.74 : x
  2. Step 2: Convert to fraction form
    5,458.81/8,188.26 = 2,172.74/x
  3. Step 3: Cross multiply
    5,458.81x = 8,188.26 × 2,172.74
  4. Step 4: Simplify right side
    5,458.81x = 17,790,960.03
  5. Step 5: Solve for x
    x = 17,790,960.03/5,458.81
  6. Step 6: Final answer
    x = 3,259.13

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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.