Home / 2,172.34-2,997.84-1,177.62

Finding the Fourth Proportional to 2,172.34, 2,997.84 and 1,177.62

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Solution

The fourth proportional to 2,172.34, 2,997.84 and 1,177.62 is: 1,625.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,172.34 : 2,997.84 = 1,177.62 : x
  2. Step 2: Convert to fraction form
    2,172.34/2,997.84 = 1,177.62/x
  3. Step 3: Cross multiply
    2,172.34x = 2,997.84 × 1,177.62
  4. Step 4: Simplify right side
    2,172.34x = 3,530,316.34
  5. Step 5: Solve for x
    x = 3,530,316.34/2,172.34
  6. Step 6: Final answer
    x = 1,625.12

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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.