Home / 5,285.75-7,928.69-2,512.70

Finding the Fourth Proportional to 5,285.75, 7,928.69 and 2,512.70

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Solution

The fourth proportional to 5,285.75, 7,928.69 and 2,512.70 is: 3,769.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,285.75 : 7,928.69 = 2,512.70 : x
  2. Step 2: Convert to fraction form
    5,285.75/7,928.69 = 2,512.70/x
  3. Step 3: Cross multiply
    5,285.75x = 7,928.69 × 2,512.70
  4. Step 4: Simplify right side
    5,285.75x = 19,922,367.16
  5. Step 5: Solve for x
    x = 19,922,367.16/5,285.75
  6. Step 6: Final answer
    x = 3,769.07

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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.