Home / 1,571.31-2,357.85-1,447.38

Finding the Fourth Proportional to 1,571.31, 2,357.85 and 1,447.38

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Solution

The fourth proportional to 1,571.31, 2,357.85 and 1,447.38 is: 2,171.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,571.31 : 2,357.85 = 1,447.38 : x
  2. Step 2: Convert to fraction form
    1,571.31/2,357.85 = 1,447.38/x
  3. Step 3: Cross multiply
    1,571.31x = 2,357.85 × 1,447.38
  4. Step 4: Simplify right side
    1,571.31x = 3,412,704.93
  5. Step 5: Solve for x
    x = 3,412,704.93/1,571.31
  6. Step 6: Final answer
    x = 2,171.89

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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.