Home / 2,172.20-2,997.63-1,177.48

Finding the Fourth Proportional to 2,172.20, 2,997.63 and 1,177.48

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Solution

The fourth proportional to 2,172.20, 2,997.63 and 1,177.48 is: 1,624.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,172.20 : 2,997.63 = 1,177.48 : x
  2. Step 2: Convert to fraction form
    2,172.20/2,997.63 = 1,177.48/x
  3. Step 3: Cross multiply
    2,172.20x = 2,997.63 × 1,177.48
  4. Step 4: Simplify right side
    2,172.20x = 3,529,628.50
  5. Step 5: Solve for x
    x = 3,529,628.50/2,172.20
  6. Step 6: Final answer
    x = 1,624.91

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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.