Home / 1,431.30-2,144.36-1,201.67

Finding the Fourth Proportional to 1,431.30, 2,144.36 and 1,201.67

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Solution

The fourth proportional to 1,431.30, 2,144.36 and 1,201.67 is: 1,800.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431.30 : 2,144.36 = 1,201.67 : x
  2. Step 2: Convert to fraction form
    1,431.30/2,144.36 = 1,201.67/x
  3. Step 3: Cross multiply
    1,431.30x = 2,144.36 × 1,201.67
  4. Step 4: Simplify right side
    1,431.30x = 2,576,813.08
  5. Step 5: Solve for x
    x = 2,576,813.08/1,431.30
  6. Step 6: Final answer
    x = 1,800.33

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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.