Home / 1,927.75-2,889.60-1,378.30

Finding the Fourth Proportional to 1,927.75, 2,889.60 and 1,378.30

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Solution

The fourth proportional to 1,927.75, 2,889.60 and 1,378.30 is: 2,066.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,927.75 : 2,889.60 = 1,378.30 : x
  2. Step 2: Convert to fraction form
    1,927.75/2,889.60 = 1,378.30/x
  3. Step 3: Cross multiply
    1,927.75x = 2,889.60 × 1,378.30
  4. Step 4: Simplify right side
    1,927.75x = 3,982,735.68
  5. Step 5: Solve for x
    x = 3,982,735.68/1,927.75
  6. Step 6: Final answer
    x = 2,066.00

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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.