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Finding the Fourth Proportional to 1,896.86, 2,618.07 and 1,275.50

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Solution

The fourth proportional to 1,896.86, 2,618.07 and 1,275.50 is: 1,760.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,896.86 : 2,618.07 = 1,275.50 : x
  2. Step 2: Convert to fraction form
    1,896.86/2,618.07 = 1,275.50/x
  3. Step 3: Cross multiply
    1,896.86x = 2,618.07 × 1,275.50
  4. Step 4: Simplify right side
    1,896.86x = 3,339,348.29
  5. Step 5: Solve for x
    x = 3,339,348.29/1,896.86
  6. Step 6: Final answer
    x = 1,760.46

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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.