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Finding the Fourth Proportional to 7,992.58, 11,992.33 and 4,290.48

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Solution

The fourth proportional to 7,992.58, 11,992.33 and 4,290.48 is: 6,437.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,992.58 : 11,992.33 = 4,290.48 : x
  2. Step 2: Convert to fraction form
    7,992.58/11,992.33 = 4,290.48/x
  3. Step 3: Cross multiply
    7,992.58x = 11,992.33 × 4,290.48
  4. Step 4: Simplify right side
    7,992.58x = 51,452,852.02
  5. Step 5: Solve for x
    x = 51,452,852.02/7,992.58
  6. Step 6: Final answer
    x = 6,437.58

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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.