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Finding the Fourth Proportional to 1,893.78, 2,613.06 and 1,107.54

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Solution

The fourth proportional to 1,893.78, 2,613.06 and 1,107.54 is: 1,528.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,893.78 : 2,613.06 = 1,107.54 : x
  2. Step 2: Convert to fraction form
    1,893.78/2,613.06 = 1,107.54/x
  3. Step 3: Cross multiply
    1,893.78x = 2,613.06 × 1,107.54
  4. Step 4: Simplify right side
    1,893.78x = 2,894,068.47
  5. Step 5: Solve for x
    x = 2,894,068.47/1,893.78
  6. Step 6: Final answer
    x = 1,528.20

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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.