Home / 7,718.88-11,576.76-2,172.48

Finding the Fourth Proportional to 7,718.88, 11,576.76 and 2,172.48

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Solution

The fourth proportional to 7,718.88, 11,576.76 and 2,172.48 is: 3,258.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,718.88 : 11,576.76 = 2,172.48 : x
  2. Step 2: Convert to fraction form
    7,718.88/11,576.76 = 2,172.48/x
  3. Step 3: Cross multiply
    7,718.88x = 11,576.76 × 2,172.48
  4. Step 4: Simplify right side
    7,718.88x = 25,150,268.70
  5. Step 5: Solve for x
    x = 25,150,268.70/7,718.88
  6. Step 6: Final answer
    x = 3,258.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.