Home / 1,317.70-1,975.80-1,163.93

Finding the Fourth Proportional to 1,317.70, 1,975.80 and 1,163.93

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Solution

The fourth proportional to 1,317.70, 1,975.80 and 1,163.93 is: 1,745.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317.70 : 1,975.80 = 1,163.93 : x
  2. Step 2: Convert to fraction form
    1,317.70/1,975.80 = 1,163.93/x
  3. Step 3: Cross multiply
    1,317.70x = 1,975.80 × 1,163.93
  4. Step 4: Simplify right side
    1,317.70x = 2,299,692.89
  5. Step 5: Solve for x
    x = 2,299,692.89/1,317.70
  6. Step 6: Final answer
    x = 1,745.23

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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.