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Finding the Fourth Proportional to 5,015.80, 7,529.10 and 2,828.80

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Solution

The fourth proportional to 5,015.80, 7,529.10 and 2,828.80 is: 4,246.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,015.80 : 7,529.10 = 2,828.80 : x
  2. Step 2: Convert to fraction form
    5,015.80/7,529.10 = 2,828.80/x
  3. Step 3: Cross multiply
    5,015.80x = 7,529.10 × 2,828.80
  4. Step 4: Simplify right side
    5,015.80x = 21,298,318.08
  5. Step 5: Solve for x
    x = 21,298,318.08/5,015.80
  6. Step 6: Final answer
    x = 4,246.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.