Home / 4,896.90-6,759.26-3,128.51

Finding the Fourth Proportional to 4,896.90, 6,759.26 and 3,128.51

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Solution

The fourth proportional to 4,896.90, 6,759.26 and 3,128.51 is: 4,318.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,896.90 : 6,759.26 = 3,128.51 : x
  2. Step 2: Convert to fraction form
    4,896.90/6,759.26 = 3,128.51/x
  3. Step 3: Cross multiply
    4,896.90x = 6,759.26 × 3,128.51
  4. Step 4: Simplify right side
    4,896.90x = 21,146,387.47
  5. Step 5: Solve for x
    x = 21,146,387.47/4,896.90
  6. Step 6: Final answer
    x = 4,318.32

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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.