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Finding the Fourth Proportional to 1,571.69, 2,163.96 and 1,197.47

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Solution

The fourth proportional to 1,571.69, 2,163.96 and 1,197.47 is: 1,648.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,571.69 : 2,163.96 = 1,197.47 : x
  2. Step 2: Convert to fraction form
    1,571.69/2,163.96 = 1,197.47/x
  3. Step 3: Cross multiply
    1,571.69x = 2,163.96 × 1,197.47
  4. Step 4: Simplify right side
    1,571.69x = 2,591,266.36
  5. Step 5: Solve for x
    x = 2,591,266.36/1,571.69
  6. Step 6: Final answer
    x = 1,648.72

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1.5x scale

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.