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Finding the Fourth Proportional to 7,991.16, 11,028.84 and 5,760.42

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Solution

The fourth proportional to 7,991.16, 11,028.84 and 5,760.42 is: 7,950.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,991.16 : 11,028.84 = 5,760.42 : x
  2. Step 2: Convert to fraction form
    7,991.16/11,028.84 = 5,760.42/x
  3. Step 3: Cross multiply
    7,991.16x = 11,028.84 × 5,760.42
  4. Step 4: Simplify right side
    7,991.16x = 63,530,750.51
  5. Step 5: Solve for x
    x = 63,530,750.51/7,991.16
  6. Step 6: Final answer
    x = 7,950.13

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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.