Home / 2,980.26-4,112.16-1,801.40

Finding the Fourth Proportional to 2,980.26, 4,112.16 and 1,801.40

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Solution

The fourth proportional to 2,980.26, 4,112.16 and 1,801.40 is: 2,485.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,980.26 : 4,112.16 = 1,801.40 : x
  2. Step 2: Convert to fraction form
    2,980.26/4,112.16 = 1,801.40/x
  3. Step 3: Cross multiply
    2,980.26x = 4,112.16 × 1,801.40
  4. Step 4: Simplify right side
    2,980.26x = 7,407,645.02
  5. Step 5: Solve for x
    x = 7,407,645.02/2,980.26
  6. Step 6: Final answer
    x = 2,485.57

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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.