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Finding the Fourth Proportional to 1,896.47, 2,842.75 and 726.15

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Solution

The fourth proportional to 1,896.47, 2,842.75 and 726.15 is: 1,088.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,896.47 : 2,842.75 = 726.15 : x
  2. Step 2: Convert to fraction form
    1,896.47/2,842.75 = 726.15/x
  3. Step 3: Cross multiply
    1,896.47x = 2,842.75 × 726.15
  4. Step 4: Simplify right side
    1,896.47x = 2,064,265.56
  5. Step 5: Solve for x
    x = 2,064,265.56/1,896.47
  6. Step 6: Final answer
    x = 1,088.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.