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Finding the Fourth Proportional to 3,907.55, 5,862.18 and 1,310.42

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Solution

The fourth proportional to 3,907.55, 5,862.18 and 1,310.42 is: 1,965.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,907.55 : 5,862.18 = 1,310.42 : x
  2. Step 2: Convert to fraction form
    3,907.55/5,862.18 = 1,310.42/x
  3. Step 3: Cross multiply
    3,907.55x = 5,862.18 × 1,310.42
  4. Step 4: Simplify right side
    3,907.55x = 7,681,917.92
  5. Step 5: Solve for x
    x = 7,681,917.92/3,907.55
  6. Step 6: Final answer
    x = 1,965.92

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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.