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Finding the Fourth Proportional to 1,983.79, 2,737.92 and 1,144.63

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Solution

The fourth proportional to 1,983.79, 2,737.92 and 1,144.63 is: 1,579.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,983.79 : 2,737.92 = 1,144.63 : x
  2. Step 2: Convert to fraction form
    1,983.79/2,737.92 = 1,144.63/x
  3. Step 3: Cross multiply
    1,983.79x = 2,737.92 × 1,144.63
  4. Step 4: Simplify right side
    1,983.79x = 3,133,905.37
  5. Step 5: Solve for x
    x = 3,133,905.37/1,983.79
  6. Step 6: Final answer
    x = 1,579.76

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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.