Home / 2,921.94-4,384.35-1,947.78

Finding the Fourth Proportional to 2,921.94, 4,384.35 and 1,947.78

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Solution

The fourth proportional to 2,921.94, 4,384.35 and 1,947.78 is: 2,922.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,921.94 : 4,384.35 = 1,947.78 : x
  2. Step 2: Convert to fraction form
    2,921.94/4,384.35 = 1,947.78/x
  3. Step 3: Cross multiply
    2,921.94x = 4,384.35 × 1,947.78
  4. Step 4: Simplify right side
    2,921.94x = 8,539,749.24
  5. Step 5: Solve for x
    x = 8,539,749.24/2,921.94
  6. Step 6: Final answer
    x = 2,922.63

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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.