Home / 8,198.60-11,313.05-5,172.58

Finding the Fourth Proportional to 8,198.60, 11,313.05 and 5,172.58

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Solution

The fourth proportional to 8,198.60, 11,313.05 and 5,172.58 is: 7,137.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,198.60 : 11,313.05 = 5,172.58 : x
  2. Step 2: Convert to fraction form
    8,198.60/11,313.05 = 5,172.58/x
  3. Step 3: Cross multiply
    8,198.60x = 11,313.05 × 5,172.58
  4. Step 4: Simplify right side
    8,198.60x = 58,517,599.60
  5. Step 5: Solve for x
    x = 58,517,599.60/8,198.60
  6. Step 6: Final answer
    x = 7,137.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.