Home / 2,971.55-4,100.58-1,645.22

Finding the Fourth Proportional to 2,971.55, 4,100.58 and 1,645.22

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Solution

The fourth proportional to 2,971.55, 4,100.58 and 1,645.22 is: 2,270.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,971.55 : 4,100.58 = 1,645.22 : x
  2. Step 2: Convert to fraction form
    2,971.55/4,100.58 = 1,645.22/x
  3. Step 3: Cross multiply
    2,971.55x = 4,100.58 × 1,645.22
  4. Step 4: Simplify right side
    2,971.55x = 6,746,335.72
  5. Step 5: Solve for x
    x = 6,746,335.72/2,971.55
  6. Step 6: Final answer
    x = 2,270.31

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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.