Home / 2,845.20-3,928.79-1,784.74

Finding the Fourth Proportional to 2,845.20, 3,928.79 and 1,784.74

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Solution

The fourth proportional to 2,845.20, 3,928.79 and 1,784.74 is: 2,464.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,845.20 : 3,928.79 = 1,784.74 : x
  2. Step 2: Convert to fraction form
    2,845.20/3,928.79 = 1,784.74/x
  3. Step 3: Cross multiply
    2,845.20x = 3,928.79 × 1,784.74
  4. Step 4: Simplify right side
    2,845.20x = 7,011,863.30
  5. Step 5: Solve for x
    x = 7,011,863.30/2,845.20
  6. Step 6: Final answer
    x = 2,464.46

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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.