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Finding the Fourth Proportional to 1,801.82, 2,486.02 and 1,138.43

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Solution

The fourth proportional to 1,801.82, 2,486.02 and 1,138.43 is: 1,570.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,801.82 : 2,486.02 = 1,138.43 : x
  2. Step 2: Convert to fraction form
    1,801.82/2,486.02 = 1,138.43/x
  3. Step 3: Cross multiply
    1,801.82x = 2,486.02 × 1,138.43
  4. Step 4: Simplify right side
    1,801.82x = 2,830,159.75
  5. Step 5: Solve for x
    x = 2,830,159.75/1,801.82
  6. Step 6: Final answer
    x = 1,570.72

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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.