Home / 1,213.08-1,685.27-1,201.67

Finding the Fourth Proportional to 1,213.08, 1,685.27 and 1,201.67

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Solution

The fourth proportional to 1,213.08, 1,685.27 and 1,201.67 is: 1,669.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213.08 : 1,685.27 = 1,201.67 : x
  2. Step 2: Convert to fraction form
    1,213.08/1,685.27 = 1,201.67/x
  3. Step 3: Cross multiply
    1,213.08x = 1,685.27 × 1,201.67
  4. Step 4: Simplify right side
    1,213.08x = 2,025,139.30
  5. Step 5: Solve for x
    x = 2,025,139.30/1,213.08
  6. Step 6: Final answer
    x = 1,669.42

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.