Home / 1,694.40-2,541.82-720.38

Finding the Fourth Proportional to 1,694.40, 2,541.82 and 720.38

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Solution

The fourth proportional to 1,694.40, 2,541.82 and 720.38 is: 1,080.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,694.40 : 2,541.82 = 720.38 : x
  2. Step 2: Convert to fraction form
    1,694.40/2,541.82 = 720.38/x
  3. Step 3: Cross multiply
    1,694.40x = 2,541.82 × 720.38
  4. Step 4: Simplify right side
    1,694.40x = 1,831,076.29
  5. Step 5: Solve for x
    x = 1,831,076.29/1,694.40
  6. Step 6: Final answer
    x = 1,080.66

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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.