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Finding the Fourth Proportional to 8,662.12, 11,955.62 and 5,126.12

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Solution

The fourth proportional to 8,662.12, 11,955.62 and 5,126.12 is: 7,075.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,662.12 : 11,955.62 = 5,126.12 : x
  2. Step 2: Convert to fraction form
    8,662.12/11,955.62 = 5,126.12/x
  3. Step 3: Cross multiply
    8,662.12x = 11,955.62 × 5,126.12
  4. Step 4: Simplify right side
    8,662.12x = 61,285,942.79
  5. Step 5: Solve for x
    x = 61,285,942.79/8,662.12
  6. Step 6: Final answer
    x = 7,075.17

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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.