Home / 4,128.87-5,698.31-2,869.59

Finding the Fourth Proportional to 4,128.87, 5,698.31 and 2,869.59

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Solution

The fourth proportional to 4,128.87, 5,698.31 and 2,869.59 is: 3,960.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,128.87 : 5,698.31 = 2,869.59 : x
  2. Step 2: Convert to fraction form
    4,128.87/5,698.31 = 2,869.59/x
  3. Step 3: Cross multiply
    4,128.87x = 5,698.31 × 2,869.59
  4. Step 4: Simplify right side
    4,128.87x = 16,351,813.39
  5. Step 5: Solve for x
    x = 16,351,813.39/4,128.87
  6. Step 6: Final answer
    x = 3,960.36

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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.