Home / 1,787.97-2,664.47-1,729.20

Finding the Fourth Proportional to 1,787.97, 2,664.47 and 1,729.20

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Solution

The fourth proportional to 1,787.97, 2,664.47 and 1,729.20 is: 2,576.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,787.97 : 2,664.47 = 1,729.20 : x
  2. Step 2: Convert to fraction form
    1,787.97/2,664.47 = 1,729.20/x
  3. Step 3: Cross multiply
    1,787.97x = 2,664.47 × 1,729.20
  4. Step 4: Simplify right side
    1,787.97x = 4,607,395.99
  5. Step 5: Solve for x
    x = 4,607,395.99/1,787.97
  6. Step 6: Final answer
    x = 2,576.88

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.