Home / 2,845.73-3,929.53-1,785.28

Finding the Fourth Proportional to 2,845.73, 3,929.53 and 1,785.28

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Solution

The fourth proportional to 2,845.73, 3,929.53 and 1,785.28 is: 2,465.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,845.73 : 3,929.53 = 1,785.28 : x
  2. Step 2: Convert to fraction form
    2,845.73/3,929.53 = 1,785.28/x
  3. Step 3: Cross multiply
    2,845.73x = 3,929.53 × 1,785.28
  4. Step 4: Simplify right side
    2,845.73x = 7,015,311.32
  5. Step 5: Solve for x
    x = 7,015,311.32/2,845.73
  6. Step 6: Final answer
    x = 2,465.21

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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.