Home / 2,447.94-3,378.30-1,385.76

Finding the Fourth Proportional to 2,447.94, 3,378.30 and 1,385.76

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Solution

The fourth proportional to 2,447.94, 3,378.30 and 1,385.76 is: 1,912.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,447.94 : 3,378.30 = 1,385.76 : x
  2. Step 2: Convert to fraction form
    2,447.94/3,378.30 = 1,385.76/x
  3. Step 3: Cross multiply
    2,447.94x = 3,378.30 × 1,385.76
  4. Step 4: Simplify right side
    2,447.94x = 4,681,513.01
  5. Step 5: Solve for x
    x = 4,681,513.01/2,447.94
  6. Step 6: Final answer
    x = 1,912.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.