Home / 2,172.10-2,997.52-1,177.39

Finding the Fourth Proportional to 2,172.10, 2,997.52 and 1,177.39

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Solution

The fourth proportional to 2,172.10, 2,997.52 and 1,177.39 is: 1,624.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,172.10 : 2,997.52 = 1,177.39 : x
  2. Step 2: Convert to fraction form
    2,172.10/2,997.52 = 1,177.39/x
  3. Step 3: Cross multiply
    2,172.10x = 2,997.52 × 1,177.39
  4. Step 4: Simplify right side
    2,172.10x = 3,529,235.09
  5. Step 5: Solve for x
    x = 3,529,235.09/2,172.10
  6. Step 6: Final answer
    x = 1,624.80

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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.