Home / 1,921.11-2,645.96-1,658.67

Finding the Fourth Proportional to 1,921.11, 2,645.96 and 1,658.67

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Solution

The fourth proportional to 1,921.11, 2,645.96 and 1,658.67 is: 2,284.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,921.11 : 2,645.96 = 1,658.67 : x
  2. Step 2: Convert to fraction form
    1,921.11/2,645.96 = 1,658.67/x
  3. Step 3: Cross multiply
    1,921.11x = 2,645.96 × 1,658.67
  4. Step 4: Simplify right side
    1,921.11x = 4,388,766.18
  5. Step 5: Solve for x
    x = 4,388,766.18/1,921.11
  6. Step 6: Final answer
    x = 2,284.49

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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.