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Finding the Fourth Proportional to 2,918.52, 4,029.78 and 1,801.02

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Solution

The fourth proportional to 2,918.52, 4,029.78 and 1,801.02 is: 2,486.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,918.52 : 4,029.78 = 1,801.02 : x
  2. Step 2: Convert to fraction form
    2,918.52/4,029.78 = 1,801.02/x
  3. Step 3: Cross multiply
    2,918.52x = 4,029.78 × 1,801.02
  4. Step 4: Simplify right side
    2,918.52x = 7,257,714.38
  5. Step 5: Solve for x
    x = 7,257,714.38/2,918.52
  6. Step 6: Final answer
    x = 2,486.78

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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.