Home / 1,273.12-1,907.78-1,043.62

Finding the Fourth Proportional to 1,273.12, 1,907.78 and 1,043.62

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Solution

The fourth proportional to 1,273.12, 1,907.78 and 1,043.62 is: 1,563.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,273.12 : 1,907.78 = 1,043.62 : x
  2. Step 2: Convert to fraction form
    1,273.12/1,907.78 = 1,043.62/x
  3. Step 3: Cross multiply
    1,273.12x = 1,907.78 × 1,043.62
  4. Step 4: Simplify right side
    1,273.12x = 1,990,997.36
  5. Step 5: Solve for x
    x = 1,990,997.36/1,273.12
  6. Step 6: Final answer
    x = 1,563.87

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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.