Home / 3,138.32-4,705.66-1,190.68

Finding the Fourth Proportional to 3,138.32, 4,705.66 and 1,190.68

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Solution

The fourth proportional to 3,138.32, 4,705.66 and 1,190.68 is: 1,785.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138.32 : 4,705.66 = 1,190.68 : x
  2. Step 2: Convert to fraction form
    3,138.32/4,705.66 = 1,190.68/x
  3. Step 3: Cross multiply
    3,138.32x = 4,705.66 × 1,190.68
  4. Step 4: Simplify right side
    3,138.32x = 5,602,935.25
  5. Step 5: Solve for x
    x = 5,602,935.25/3,138.32
  6. Step 6: Final answer
    x = 1,785.33

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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.