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Finding the Fourth Proportional to 1,893.92, 2,613.31 and 1,147.95

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Solution

The fourth proportional to 1,893.92, 2,613.31 and 1,147.95 is: 1,583.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,893.92 : 2,613.31 = 1,147.95 : x
  2. Step 2: Convert to fraction form
    1,893.92/2,613.31 = 1,147.95/x
  3. Step 3: Cross multiply
    1,893.92x = 2,613.31 × 1,147.95
  4. Step 4: Simplify right side
    1,893.92x = 2,999,946.34
  5. Step 5: Solve for x
    x = 2,999,946.34/1,893.92
  6. Step 6: Final answer
    x = 1,583.99

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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.