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Finding the Fourth Proportional to 7,998.88, 12,002.64 and 3,894.88

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Solution

The fourth proportional to 7,998.88, 12,002.64 and 3,894.88 is: 5,844.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,998.88 : 12,002.64 = 3,894.88 : x
  2. Step 2: Convert to fraction form
    7,998.88/12,002.64 = 3,894.88/x
  3. Step 3: Cross multiply
    7,998.88x = 12,002.64 × 3,894.88
  4. Step 4: Simplify right side
    7,998.88x = 46,748,842.48
  5. Step 5: Solve for x
    x = 46,748,842.48/7,998.88
  6. Step 6: Final answer
    x = 5,844.42

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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.