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Finding the Fourth Proportional to 1,992.03, 2,972.99 and 1,940.19

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Solution

The fourth proportional to 1,992.03, 2,972.99 and 1,940.19 is: 2,895.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,992.03 : 2,972.99 = 1,940.19 : x
  2. Step 2: Convert to fraction form
    1,992.03/2,972.99 = 1,940.19/x
  3. Step 3: Cross multiply
    1,992.03x = 2,972.99 × 1,940.19
  4. Step 4: Simplify right side
    1,992.03x = 5,768,155.77
  5. Step 5: Solve for x
    x = 5,768,155.77/1,992.03
  6. Step 6: Final answer
    x = 2,895.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.