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Finding the Fourth Proportional to 1,798.31, 2,696.75 and 758.81

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Solution

The fourth proportional to 1,798.31, 2,696.75 and 758.81 is: 1,137.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,798.31 : 2,696.75 = 758.81 : x
  2. Step 2: Convert to fraction form
    1,798.31/2,696.75 = 758.81/x
  3. Step 3: Cross multiply
    1,798.31x = 2,696.75 × 758.81
  4. Step 4: Simplify right side
    1,798.31x = 2,046,303.59
  5. Step 5: Solve for x
    x = 2,046,303.59/1,798.31
  6. Step 6: Final answer
    x = 1,137.91

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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.