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Finding the Fourth Proportional to 7,986.01, 11,969.92 and 4,859.12

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Solution

The fourth proportional to 7,986.01, 11,969.92 and 4,859.12 is: 7,283.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,986.01 : 11,969.92 = 4,859.12 : x
  2. Step 2: Convert to fraction form
    7,986.01/11,969.92 = 4,859.12/x
  3. Step 3: Cross multiply
    7,986.01x = 11,969.92 × 4,859.12
  4. Step 4: Simplify right side
    7,986.01x = 58,163,238.86
  5. Step 5: Solve for x
    x = 58,163,238.86/7,986.01
  6. Step 6: Final answer
    x = 7,283.15

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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.