Home / 1,356-2,021.67-1,273.38

Finding the Fourth Proportional to 1,356, 2,021.67 and 1,273.38

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Solution

The fourth proportional to 1,356, 2,021.67 and 1,273.38 is: 1,898.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,356 : 2,021.67 = 1,273.38 : x
  2. Step 2: Convert to fraction form
    1,356/2,021.67 = 1,273.38/x
  3. Step 3: Cross multiply
    1,356x = 2,021.67 × 1,273.38
  4. Step 4: Simplify right side
    1,356x = 2,574,354.14
  5. Step 5: Solve for x
    x = 2,574,354.14/1,356
  6. Step 6: Final answer
    x = 1,898.49

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.