Home / 4,128.90-5,696.78-2,448.92

Finding the Fourth Proportional to 4,128.90, 5,696.78 and 2,448.92

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Solution

The fourth proportional to 4,128.90, 5,696.78 and 2,448.92 is: 3,378.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,128.90 : 5,696.78 = 2,448.92 : x
  2. Step 2: Convert to fraction form
    4,128.90/5,696.78 = 2,448.92/x
  3. Step 3: Cross multiply
    4,128.90x = 5,696.78 × 2,448.92
  4. Step 4: Simplify right side
    4,128.90x = 13,950,917.75
  5. Step 5: Solve for x
    x = 13,950,917.75/4,128.90
  6. Step 6: Final answer
    x = 3,378.85

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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.