Home / 2,045.39-2,821.74-1,382

Finding the Fourth Proportional to 2,045.39, 2,821.74 and 1,382

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Solution

The fourth proportional to 2,045.39, 2,821.74 and 1,382 is: 1,906.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,045.39 : 2,821.74 = 1,382 : x
  2. Step 2: Convert to fraction form
    2,045.39/2,821.74 = 1,382/x
  3. Step 3: Cross multiply
    2,045.39x = 2,821.74 × 1,382
  4. Step 4: Simplify right side
    2,045.39x = 3,899,644.68
  5. Step 5: Solve for x
    x = 3,899,644.68/2,045.39
  6. Step 6: Final answer
    x = 1,906.55

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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.