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Finding the Fourth Proportional to 2,599.84, 3,900.36 and 751

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Solution

The fourth proportional to 2,599.84, 3,900.36 and 751 is: 1,126.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,599.84 : 3,900.36 = 751 : x
  2. Step 2: Convert to fraction form
    2,599.84/3,900.36 = 751/x
  3. Step 3: Cross multiply
    2,599.84x = 3,900.36 × 751
  4. Step 4: Simplify right side
    2,599.84x = 2,929,170.36
  5. Step 5: Solve for x
    x = 2,929,170.36/2,599.84
  6. Step 6: Final answer
    x = 1,126.67

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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.