Home / 2,785.56-3,845.20-1,902.28

Finding the Fourth Proportional to 2,785.56, 3,845.20 and 1,902.28

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Solution

The fourth proportional to 2,785.56, 3,845.20 and 1,902.28 is: 2,625.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,785.56 : 3,845.20 = 1,902.28 : x
  2. Step 2: Convert to fraction form
    2,785.56/3,845.20 = 1,902.28/x
  3. Step 3: Cross multiply
    2,785.56x = 3,845.20 × 1,902.28
  4. Step 4: Simplify right side
    2,785.56x = 7,314,647.06
  5. Step 5: Solve for x
    x = 7,314,647.06/2,785.56
  6. Step 6: Final answer
    x = 2,625.92

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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.