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Finding the Fourth Proportional to 2,131.34, 3,197.02 and 744.67

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Solution

The fourth proportional to 2,131.34, 3,197.02 and 744.67 is: 1,117.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,131.34 : 3,197.02 = 744.67 : x
  2. Step 2: Convert to fraction form
    2,131.34/3,197.02 = 744.67/x
  3. Step 3: Cross multiply
    2,131.34x = 3,197.02 × 744.67
  4. Step 4: Simplify right side
    2,131.34x = 2,380,729.81
  5. Step 5: Solve for x
    x = 2,380,729.81/2,131.34
  6. Step 6: Final answer
    x = 1,117.01

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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.