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Finding the Fourth Proportional to 7,903.88, 11,859.01 and 3,518.34

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Solution

The fourth proportional to 7,903.88, 11,859.01 and 3,518.34 is: 5,278.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,903.88 : 11,859.01 = 3,518.34 : x
  2. Step 2: Convert to fraction form
    7,903.88/11,859.01 = 3,518.34/x
  3. Step 3: Cross multiply
    7,903.88x = 11,859.01 × 3,518.34
  4. Step 4: Simplify right side
    7,903.88x = 41,724,029.24
  5. Step 5: Solve for x
    x = 41,724,029.24/7,903.88
  6. Step 6: Final answer
    x = 5,278.93

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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.