Home / 2,172.36-2,997.82-1,177.63

Finding the Fourth Proportional to 2,172.36, 2,997.82 and 1,177.63

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Solution

The fourth proportional to 2,172.36, 2,997.82 and 1,177.63 is: 1,625.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,172.36 : 2,997.82 = 1,177.63 : x
  2. Step 2: Convert to fraction form
    2,172.36/2,997.82 = 1,177.63/x
  3. Step 3: Cross multiply
    2,172.36x = 2,997.82 × 1,177.63
  4. Step 4: Simplify right side
    2,172.36x = 3,530,322.77
  5. Step 5: Solve for x
    x = 3,530,322.77/2,172.36
  6. Step 6: Final answer
    x = 1,625.11

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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.