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Finding the Fourth Proportional to 1,941.09, 2,912.16 and 1,248.09

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Solution

The fourth proportional to 1,941.09, 2,912.16 and 1,248.09 is: 1,872.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,941.09 : 2,912.16 = 1,248.09 : x
  2. Step 2: Convert to fraction form
    1,941.09/2,912.16 = 1,248.09/x
  3. Step 3: Cross multiply
    1,941.09x = 2,912.16 × 1,248.09
  4. Step 4: Simplify right side
    1,941.09x = 3,634,637.77
  5. Step 5: Solve for x
    x = 3,634,637.77/1,941.09
  6. Step 6: Final answer
    x = 1,872.47

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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.