Home / 3,855.34-5,780.58-2,125.18

Finding the Fourth Proportional to 3,855.34, 5,780.58 and 2,125.18

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Solution

The fourth proportional to 3,855.34, 5,780.58 and 2,125.18 is: 3,186.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,855.34 : 5,780.58 = 2,125.18 : x
  2. Step 2: Convert to fraction form
    3,855.34/5,780.58 = 2,125.18/x
  3. Step 3: Cross multiply
    3,855.34x = 5,780.58 × 2,125.18
  4. Step 4: Simplify right side
    3,855.34x = 12,284,773.00
  5. Step 5: Solve for x
    x = 12,284,773.00/3,855.34
  6. Step 6: Final answer
    x = 3,186.43

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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.