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Finding the Fourth Proportional to 5,195.57, 7,788.72 and 1,907.88

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Solution

The fourth proportional to 5,195.57, 7,788.72 and 1,907.88 is: 2,860.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,195.57 : 7,788.72 = 1,907.88 : x
  2. Step 2: Convert to fraction form
    5,195.57/7,788.72 = 1,907.88/x
  3. Step 3: Cross multiply
    5,195.57x = 7,788.72 × 1,907.88
  4. Step 4: Simplify right side
    5,195.57x = 14,859,943.11
  5. Step 5: Solve for x
    x = 14,859,943.11/5,195.57
  6. Step 6: Final answer
    x = 2,860.12

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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.