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Finding the Fourth Proportional to 7,323, 10,986.37 and 2,128.88

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Solution

The fourth proportional to 7,323, 10,986.37 and 2,128.88 is: 3,193.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,323 : 10,986.37 = 2,128.88 : x
  2. Step 2: Convert to fraction form
    7,323/10,986.37 = 2,128.88/x
  3. Step 3: Cross multiply
    7,323x = 10,986.37 × 2,128.88
  4. Step 4: Simplify right side
    7,323x = 23,388,615.09
  5. Step 5: Solve for x
    x = 23,388,615.09/7,323
  6. Step 6: Final answer
    x = 3,193.86

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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.