Home / 2,971.09-4,103.34-1,980.57

Finding the Fourth Proportional to 2,971.09, 4,103.34 and 1,980.57

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Solution

The fourth proportional to 2,971.09, 4,103.34 and 1,980.57 is: 2,735.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,971.09 : 4,103.34 = 1,980.57 : x
  2. Step 2: Convert to fraction form
    2,971.09/4,103.34 = 1,980.57/x
  3. Step 3: Cross multiply
    2,971.09x = 4,103.34 × 1,980.57
  4. Step 4: Simplify right side
    2,971.09x = 8,126,952.10
  5. Step 5: Solve for x
    x = 8,126,952.10/2,971.09
  6. Step 6: Final answer
    x = 2,735.34

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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.