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Finding the Fourth Proportional to 3,853.82, 5,780.74 and 1,907.40

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Solution

The fourth proportional to 3,853.82, 5,780.74 and 1,907.40 is: 2,861.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,853.82 : 5,780.74 = 1,907.40 : x
  2. Step 2: Convert to fraction form
    3,853.82/5,780.74 = 1,907.40/x
  3. Step 3: Cross multiply
    3,853.82x = 5,780.74 × 1,907.40
  4. Step 4: Simplify right side
    3,853.82x = 11,026,183.48
  5. Step 5: Solve for x
    x = 11,026,183.48/3,853.82
  6. Step 6: Final answer
    x = 2,861.10

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1.5x scale

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.