Home / 3,138.94-4,705.09-1,058.21

Finding the Fourth Proportional to 3,138.94, 4,705.09 and 1,058.21

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Solution

The fourth proportional to 3,138.94, 4,705.09 and 1,058.21 is: 1,586.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138.94 : 4,705.09 = 1,058.21 : x
  2. Step 2: Convert to fraction form
    3,138.94/4,705.09 = 1,058.21/x
  3. Step 3: Cross multiply
    3,138.94x = 4,705.09 × 1,058.21
  4. Step 4: Simplify right side
    3,138.94x = 4,978,991.23
  5. Step 5: Solve for x
    x = 4,978,991.23/3,138.94
  6. Step 6: Final answer
    x = 1,586.20

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1.5x scale

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.