Home / 1,821.73-2,513.99-1,035.78

Finding the Fourth Proportional to 1,821.73, 2,513.99 and 1,035.78

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Solution

The fourth proportional to 1,821.73, 2,513.99 and 1,035.78 is: 1,429.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,821.73 : 2,513.99 = 1,035.78 : x
  2. Step 2: Convert to fraction form
    1,821.73/2,513.99 = 1,035.78/x
  3. Step 3: Cross multiply
    1,821.73x = 2,513.99 × 1,035.78
  4. Step 4: Simplify right side
    1,821.73x = 2,603,940.56
  5. Step 5: Solve for x
    x = 2,603,940.56/1,821.73
  6. Step 6: Final answer
    x = 1,429.38

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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.