Home / 2,172.21-3,259.73-1,077.49

Finding the Fourth Proportional to 2,172.21, 3,259.73 and 1,077.49

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Solution

The fourth proportional to 2,172.21, 3,259.73 and 1,077.49 is: 1,616.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,172.21 : 3,259.73 = 1,077.49 : x
  2. Step 2: Convert to fraction form
    2,172.21/3,259.73 = 1,077.49/x
  3. Step 3: Cross multiply
    2,172.21x = 3,259.73 × 1,077.49
  4. Step 4: Simplify right side
    2,172.21x = 3,512,326.48
  5. Step 5: Solve for x
    x = 3,512,326.48/2,172.21
  6. Step 6: Final answer
    x = 1,616.94

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1.5x scale

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.