Home / 1,518.11-2,277.18-640.37

Finding the Fourth Proportional to 1,518.11, 2,277.18 and 640.37

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Solution

The fourth proportional to 1,518.11, 2,277.18 and 640.37 is: 960.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,518.11 : 2,277.18 = 640.37 : x
  2. Step 2: Convert to fraction form
    1,518.11/2,277.18 = 640.37/x
  3. Step 3: Cross multiply
    1,518.11x = 2,277.18 × 640.37
  4. Step 4: Simplify right side
    1,518.11x = 1,458,243.45
  5. Step 5: Solve for x
    x = 1,458,243.45/1,518.11
  6. Step 6: Final answer
    x = 960.57

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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.