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Finding the Fourth Proportional to 3,399.42, 4,690.86 and 1,983.24

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Solution

The fourth proportional to 3,399.42, 4,690.86 and 1,983.24 is: 2,736.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,399.42 : 4,690.86 = 1,983.24 : x
  2. Step 2: Convert to fraction form
    3,399.42/4,690.86 = 1,983.24/x
  3. Step 3: Cross multiply
    3,399.42x = 4,690.86 × 1,983.24
  4. Step 4: Simplify right side
    3,399.42x = 9,303,101.19
  5. Step 5: Solve for x
    x = 9,303,101.19/3,399.42
  6. Step 6: Final answer
    x = 2,736.67

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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.