Home / 8,121.58-12,187.23-7,460.62

Finding the Fourth Proportional to 8,121.58, 12,187.23 and 7,460.62

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Solution

The fourth proportional to 8,121.58, 12,187.23 and 7,460.62 is: 11,195.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,121.58 : 12,187.23 = 7,460.62 : x
  2. Step 2: Convert to fraction form
    8,121.58/12,187.23 = 7,460.62/x
  3. Step 3: Cross multiply
    8,121.58x = 12,187.23 × 7,460.62
  4. Step 4: Simplify right side
    8,121.58x = 90,924,291.88
  5. Step 5: Solve for x
    x = 90,924,291.88/8,121.58
  6. Step 6: Final answer
    x = 11,195.39

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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.