Home / 2,855.20-4,284.96-1,928.56

Finding the Fourth Proportional to 2,855.20, 4,284.96 and 1,928.56

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Solution

The fourth proportional to 2,855.20, 4,284.96 and 1,928.56 is: 2,894.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,855.20 : 4,284.96 = 1,928.56 : x
  2. Step 2: Convert to fraction form
    2,855.20/4,284.96 = 1,928.56/x
  3. Step 3: Cross multiply
    2,855.20x = 4,284.96 × 1,928.56
  4. Step 4: Simplify right side
    2,855.20x = 8,263,802.46
  5. Step 5: Solve for x
    x = 8,263,802.46/2,855.20
  6. Step 6: Final answer
    x = 2,894.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.