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Finding the Fourth Proportional to 1,959.36, 2,953.60 and 1,687.68

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Solution

The fourth proportional to 1,959.36, 2,953.60 and 1,687.68 is: 2,544.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,959.36 : 2,953.60 = 1,687.68 : x
  2. Step 2: Convert to fraction form
    1,959.36/2,953.60 = 1,687.68/x
  3. Step 3: Cross multiply
    1,959.36x = 2,953.60 × 1,687.68
  4. Step 4: Simplify right side
    1,959.36x = 4,984,731.65
  5. Step 5: Solve for x
    x = 4,984,731.65/1,959.36
  6. Step 6: Final answer
    x = 2,544.06

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.