Home / 1,974.02-2,721.59-1,618.64

Finding the Fourth Proportional to 1,974.02, 2,721.59 and 1,618.64

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Solution

The fourth proportional to 1,974.02, 2,721.59 and 1,618.64 is: 2,231.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,974.02 : 2,721.59 = 1,618.64 : x
  2. Step 2: Convert to fraction form
    1,974.02/2,721.59 = 1,618.64/x
  3. Step 3: Cross multiply
    1,974.02x = 2,721.59 × 1,618.64
  4. Step 4: Simplify right side
    1,974.02x = 4,405,274.44
  5. Step 5: Solve for x
    x = 4,405,274.44/1,974.02
  6. Step 6: Final answer
    x = 2,231.63

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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.