Home / 3,128.85-4,700.07-1,896.84

Finding the Fourth Proportional to 3,128.85, 4,700.07 and 1,896.84

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Solution

The fourth proportional to 3,128.85, 4,700.07 and 1,896.84 is: 2,849.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.85 : 4,700.07 = 1,896.84 : x
  2. Step 2: Convert to fraction form
    3,128.85/4,700.07 = 1,896.84/x
  3. Step 3: Cross multiply
    3,128.85x = 4,700.07 × 1,896.84
  4. Step 4: Simplify right side
    3,128.85x = 8,915,280.78
  5. Step 5: Solve for x
    x = 8,915,280.78/3,128.85
  6. Step 6: Final answer
    x = 2,849.38

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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.