Home / 3,128.82-4,693.29-1,485.53

Finding the Fourth Proportional to 3,128.82, 4,693.29 and 1,485.53

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Solution

The fourth proportional to 3,128.82, 4,693.29 and 1,485.53 is: 2,228.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.82 : 4,693.29 = 1,485.53 : x
  2. Step 2: Convert to fraction form
    3,128.82/4,693.29 = 1,485.53/x
  3. Step 3: Cross multiply
    3,128.82x = 4,693.29 × 1,485.53
  4. Step 4: Simplify right side
    3,128.82x = 6,972,023.09
  5. Step 5: Solve for x
    x = 6,972,023.09/3,128.82
  6. Step 6: Final answer
    x = 2,228.32

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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.