Home / 1,787.70-2,682.56-1,396.60

Finding the Fourth Proportional to 1,787.70, 2,682.56 and 1,396.60

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Solution

The fourth proportional to 1,787.70, 2,682.56 and 1,396.60 is: 2,095.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,787.70 : 2,682.56 = 1,396.60 : x
  2. Step 2: Convert to fraction form
    1,787.70/2,682.56 = 1,396.60/x
  3. Step 3: Cross multiply
    1,787.70x = 2,682.56 × 1,396.60
  4. Step 4: Simplify right side
    1,787.70x = 3,746,458.27
  5. Step 5: Solve for x
    x = 3,746,458.27/1,787.70
  6. Step 6: Final answer
    x = 2,095.69

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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.