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Finding the Fourth Proportional to 7,418.60, 11,127.18 and 1,946.60

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Solution

The fourth proportional to 7,418.60, 11,127.18 and 1,946.60 is: 2,919.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,418.60 : 11,127.18 = 1,946.60 : x
  2. Step 2: Convert to fraction form
    7,418.60/11,127.18 = 1,946.60/x
  3. Step 3: Cross multiply
    7,418.60x = 11,127.18 × 1,946.60
  4. Step 4: Simplify right side
    7,418.60x = 21,660,168.59
  5. Step 5: Solve for x
    x = 21,660,168.59/7,418.60
  6. Step 6: Final answer
    x = 2,919.71

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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.