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Finding the Fourth Proportional to 8,695.63, 11,991.12 and 7,440.83

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Solution

The fourth proportional to 8,695.63, 11,991.12 and 7,440.83 is: 10,260.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,695.63 : 11,991.12 = 7,440.83 : x
  2. Step 2: Convert to fraction form
    8,695.63/11,991.12 = 7,440.83/x
  3. Step 3: Cross multiply
    8,695.63x = 11,991.12 × 7,440.83
  4. Step 4: Simplify right side
    8,695.63x = 89,223,951.84
  5. Step 5: Solve for x
    x = 89,223,951.84/8,695.63
  6. Step 6: Final answer
    x = 10,260.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.