Home / 1,376.72-2,054.22-1,238.36

Finding the Fourth Proportional to 1,376.72, 2,054.22 and 1,238.36

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Solution

The fourth proportional to 1,376.72, 2,054.22 and 1,238.36 is: 1,847.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,376.72 : 2,054.22 = 1,238.36 : x
  2. Step 2: Convert to fraction form
    1,376.72/2,054.22 = 1,238.36/x
  3. Step 3: Cross multiply
    1,376.72x = 2,054.22 × 1,238.36
  4. Step 4: Simplify right side
    1,376.72x = 2,543,863.88
  5. Step 5: Solve for x
    x = 2,543,863.88/1,376.72
  6. Step 6: Final answer
    x = 1,847.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.