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Finding the Fourth Proportional to 3,853.68, 5,780.52 and 1,903.92

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Solution

The fourth proportional to 3,853.68, 5,780.52 and 1,903.92 is: 2,855.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,853.68 : 5,780.52 = 1,903.92 : x
  2. Step 2: Convert to fraction form
    3,853.68/5,780.52 = 1,903.92/x
  3. Step 3: Cross multiply
    3,853.68x = 5,780.52 × 1,903.92
  4. Step 4: Simplify right side
    3,853.68x = 11,005,647.64
  5. Step 5: Solve for x
    x = 11,005,647.64/3,853.68
  6. Step 6: Final answer
    x = 2,855.88

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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.