Home / 8,138.88-12,208.93-3,458.36

Finding the Fourth Proportional to 8,138.88, 12,208.93 and 3,458.36

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Solution

The fourth proportional to 8,138.88, 12,208.93 and 3,458.36 is: 5,187.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,138.88 : 12,208.93 = 3,458.36 : x
  2. Step 2: Convert to fraction form
    8,138.88/12,208.93 = 3,458.36/x
  3. Step 3: Cross multiply
    8,138.88x = 12,208.93 × 3,458.36
  4. Step 4: Simplify right side
    8,138.88x = 42,222,897.03
  5. Step 5: Solve for x
    x = 42,222,897.03/8,138.88
  6. Step 6: Final answer
    x = 5,187.80

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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.