Home / 2,789.75-3,850.40-1,845.60

Finding the Fourth Proportional to 2,789.75, 3,850.40 and 1,845.60

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Solution

The fourth proportional to 2,789.75, 3,850.40 and 1,845.60 is: 2,547.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,789.75 : 3,850.40 = 1,845.60 : x
  2. Step 2: Convert to fraction form
    2,789.75/3,850.40 = 1,845.60/x
  3. Step 3: Cross multiply
    2,789.75x = 3,850.40 × 1,845.60
  4. Step 4: Simplify right side
    2,789.75x = 7,106,298.24
  5. Step 5: Solve for x
    x = 7,106,298.24/2,789.75
  6. Step 6: Final answer
    x = 2,547.29

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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.