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Finding the Fourth Proportional to 2,351.81, 3,525.62 and 891.98

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Solution

The fourth proportional to 2,351.81, 3,525.62 and 891.98 is: 1,337.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,351.81 : 3,525.62 = 891.98 : x
  2. Step 2: Convert to fraction form
    2,351.81/3,525.62 = 891.98/x
  3. Step 3: Cross multiply
    2,351.81x = 3,525.62 × 891.98
  4. Step 4: Simplify right side
    2,351.81x = 3,144,786.88
  5. Step 5: Solve for x
    x = 3,144,786.88/2,351.81
  6. Step 6: Final answer
    x = 1,337.18

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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.