Home / 2,172.88-2,993.51-1,777.60

Finding the Fourth Proportional to 2,172.88, 2,993.51 and 1,777.60

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Solution

The fourth proportional to 2,172.88, 2,993.51 and 1,777.60 is: 2,448.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,172.88 : 2,993.51 = 1,777.60 : x
  2. Step 2: Convert to fraction form
    2,172.88/2,993.51 = 1,777.60/x
  3. Step 3: Cross multiply
    2,172.88x = 2,993.51 × 1,777.60
  4. Step 4: Simplify right side
    2,172.88x = 5,321,263.38
  5. Step 5: Solve for x
    x = 5,321,263.38/2,172.88
  6. Step 6: Final answer
    x = 2,448.94

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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.