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Finding the Fourth Proportional to 1,843.63, 2,761.80 and 1,381.93

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Solution

The fourth proportional to 1,843.63, 2,761.80 and 1,381.93 is: 2,070.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,843.63 : 2,761.80 = 1,381.93 : x
  2. Step 2: Convert to fraction form
    1,843.63/2,761.80 = 1,381.93/x
  3. Step 3: Cross multiply
    1,843.63x = 2,761.80 × 1,381.93
  4. Step 4: Simplify right side
    1,843.63x = 3,816,602.19
  5. Step 5: Solve for x
    x = 3,816,602.19/1,843.63
  6. Step 6: Final answer
    x = 2,070.16

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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.