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Finding the Fourth Proportional to 7,999.88, 11,044.74 and 5,168.12

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Solution

The fourth proportional to 7,999.88, 11,044.74 and 5,168.12 is: 7,135.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,999.88 : 11,044.74 = 5,168.12 : x
  2. Step 2: Convert to fraction form
    7,999.88/11,044.74 = 5,168.12/x
  3. Step 3: Cross multiply
    7,999.88x = 11,044.74 × 5,168.12
  4. Step 4: Simplify right side
    7,999.88x = 57,080,541.69
  5. Step 5: Solve for x
    x = 57,080,541.69/7,999.88
  6. Step 6: Final answer
    x = 7,135.17

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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.