Home / 5,458.74-8,188.85-2,172.18

Finding the Fourth Proportional to 5,458.74, 8,188.85 and 2,172.18

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Solution

The fourth proportional to 5,458.74, 8,188.85 and 2,172.18 is: 3,258.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,458.74 : 8,188.85 = 2,172.18 : x
  2. Step 2: Convert to fraction form
    5,458.74/8,188.85 = 2,172.18/x
  3. Step 3: Cross multiply
    5,458.74x = 8,188.85 × 2,172.18
  4. Step 4: Simplify right side
    5,458.74x = 17,787,656.19
  5. Step 5: Solve for x
    x = 17,787,656.19/5,458.74
  6. Step 6: Final answer
    x = 3,258.56

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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.