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Finding the Fourth Proportional to 2,983.79, 4,118.03 and 1,804.64

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Solution

The fourth proportional to 2,983.79, 4,118.03 and 1,804.64 is: 2,490.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,983.79 : 4,118.03 = 1,804.64 : x
  2. Step 2: Convert to fraction form
    2,983.79/4,118.03 = 1,804.64/x
  3. Step 3: Cross multiply
    2,983.79x = 4,118.03 × 1,804.64
  4. Step 4: Simplify right side
    2,983.79x = 7,431,532.05
  5. Step 5: Solve for x
    x = 7,431,532.05/2,983.79
  6. Step 6: Final answer
    x = 2,490.64

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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.