Home / 8,138.21-12,210.08-3,458.03

Finding the Fourth Proportional to 8,138.21, 12,210.08 and 3,458.03

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Solution

The fourth proportional to 8,138.21, 12,210.08 and 3,458.03 is: 5,188.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,138.21 : 12,210.08 = 3,458.03 : x
  2. Step 2: Convert to fraction form
    8,138.21/12,210.08 = 3,458.03/x
  3. Step 3: Cross multiply
    8,138.21x = 12,210.08 × 3,458.03
  4. Step 4: Simplify right side
    8,138.21x = 42,222,744.60
  5. Step 5: Solve for x
    x = 42,222,744.60/8,138.21
  6. Step 6: Final answer
    x = 5,188.21

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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.