Home / 7,999.20-11,035.92-5,165.88

Finding the Fourth Proportional to 7,999.20, 11,035.92 and 5,165.88

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Solution

The fourth proportional to 7,999.20, 11,035.92 and 5,165.88 is: 7,126.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,999.20 : 11,035.92 = 5,165.88 : x
  2. Step 2: Convert to fraction form
    7,999.20/11,035.92 = 5,165.88/x
  3. Step 3: Cross multiply
    7,999.20x = 11,035.92 × 5,165.88
  4. Step 4: Simplify right side
    7,999.20x = 57,010,238.41
  5. Step 5: Solve for x
    x = 57,010,238.41/7,999.20
  6. Step 6: Final answer
    x = 7,126.99

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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.