Home / 3,138.80-4,707.22-1,137.24

Finding the Fourth Proportional to 3,138.80, 4,707.22 and 1,137.24

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Solution

The fourth proportional to 3,138.80, 4,707.22 and 1,137.24 is: 1,705.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138.80 : 4,707.22 = 1,137.24 : x
  2. Step 2: Convert to fraction form
    3,138.80/4,707.22 = 1,137.24/x
  3. Step 3: Cross multiply
    3,138.80x = 4,707.22 × 1,137.24
  4. Step 4: Simplify right side
    3,138.80x = 5,353,238.87
  5. Step 5: Solve for x
    x = 5,353,238.87/3,138.80
  6. Step 6: Final answer
    x = 1,705.50

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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.