Home / 7,675.79-11,512.54-2,128.56

Finding the Fourth Proportional to 7,675.79, 11,512.54 and 2,128.56

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Solution

The fourth proportional to 7,675.79, 11,512.54 and 2,128.56 is: 3,192.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,675.79 : 11,512.54 = 2,128.56 : x
  2. Step 2: Convert to fraction form
    7,675.79/11,512.54 = 2,128.56/x
  3. Step 3: Cross multiply
    7,675.79x = 11,512.54 × 2,128.56
  4. Step 4: Simplify right side
    7,675.79x = 24,505,074.58
  5. Step 5: Solve for x
    x = 24,505,074.58/7,675.79
  6. Step 6: Final answer
    x = 3,192.51

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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.