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Finding the Fourth Proportional to 2,125.36, 3,189.01 and 955.67

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Solution

The fourth proportional to 2,125.36, 3,189.01 and 955.67 is: 1,433.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,125.36 : 3,189.01 = 955.67 : x
  2. Step 2: Convert to fraction form
    2,125.36/3,189.01 = 955.67/x
  3. Step 3: Cross multiply
    2,125.36x = 3,189.01 × 955.67
  4. Step 4: Simplify right side
    2,125.36x = 3,047,636.30
  5. Step 5: Solve for x
    x = 3,047,636.30/2,125.36
  6. Step 6: Final answer
    x = 1,433.94

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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.