Home / 2,845.60-3,928.16-1,852.80

Finding the Fourth Proportional to 2,845.60, 3,928.16 and 1,852.80

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Solution

The fourth proportional to 2,845.60, 3,928.16 and 1,852.80 is: 2,557.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,845.60 : 3,928.16 = 1,852.80 : x
  2. Step 2: Convert to fraction form
    2,845.60/3,928.16 = 1,852.80/x
  3. Step 3: Cross multiply
    2,845.60x = 3,928.16 × 1,852.80
  4. Step 4: Simplify right side
    2,845.60x = 7,278,094.85
  5. Step 5: Solve for x
    x = 7,278,094.85/2,845.60
  6. Step 6: Final answer
    x = 2,557.67

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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.