Home / 1,945.16-2,918.94-1,021.38

Finding the Fourth Proportional to 1,945.16, 2,918.94 and 1,021.38

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Solution

The fourth proportional to 1,945.16, 2,918.94 and 1,021.38 is: 1,532.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,945.16 : 2,918.94 = 1,021.38 : x
  2. Step 2: Convert to fraction form
    1,945.16/2,918.94 = 1,021.38/x
  3. Step 3: Cross multiply
    1,945.16x = 2,918.94 × 1,021.38
  4. Step 4: Simplify right side
    1,945.16x = 2,981,344.48
  5. Step 5: Solve for x
    x = 2,981,344.48/1,945.16
  6. Step 6: Final answer
    x = 1,532.70

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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.