Home / 2,971.56-4,100.76-1,645.32

Finding the Fourth Proportional to 2,971.56, 4,100.76 and 1,645.32

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Solution

The fourth proportional to 2,971.56, 4,100.76 and 1,645.32 is: 2,270.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,971.56 : 4,100.76 = 1,645.32 : x
  2. Step 2: Convert to fraction form
    2,971.56/4,100.76 = 1,645.32/x
  3. Step 3: Cross multiply
    2,971.56x = 4,100.76 × 1,645.32
  4. Step 4: Simplify right side
    2,971.56x = 6,747,062.44
  5. Step 5: Solve for x
    x = 6,747,062.44/2,971.56
  6. Step 6: Final answer
    x = 2,270.55

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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.