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Finding the Fourth Proportional to 1,940.36, 2,925.16 and 1,815.08

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Solution

The fourth proportional to 1,940.36, 2,925.16 and 1,815.08 is: 2,736.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,940.36 : 2,925.16 = 1,815.08 : x
  2. Step 2: Convert to fraction form
    1,940.36/2,925.16 = 1,815.08/x
  3. Step 3: Cross multiply
    1,940.36x = 2,925.16 × 1,815.08
  4. Step 4: Simplify right side
    1,940.36x = 5,309,399.41
  5. Step 5: Solve for x
    x = 5,309,399.41/1,940.36
  6. Step 6: Final answer
    x = 2,736.30

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.