Home / 2,783.12-3,840.48-1,604.28

Finding the Fourth Proportional to 2,783.12, 3,840.48 and 1,604.28

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Solution

The fourth proportional to 2,783.12, 3,840.48 and 1,604.28 is: 2,213.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,783.12 : 3,840.48 = 1,604.28 : x
  2. Step 2: Convert to fraction form
    2,783.12/3,840.48 = 1,604.28/x
  3. Step 3: Cross multiply
    2,783.12x = 3,840.48 × 1,604.28
  4. Step 4: Simplify right side
    2,783.12x = 6,161,205.25
  5. Step 5: Solve for x
    x = 6,161,205.25/2,783.12
  6. Step 6: Final answer
    x = 2,213.78

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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.