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Finding the Fourth Proportional to 3,842.58, 5,758.97 and 1,868.65

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Solution

The fourth proportional to 3,842.58, 5,758.97 and 1,868.65 is: 2,800.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,842.58 : 5,758.97 = 1,868.65 : x
  2. Step 2: Convert to fraction form
    3,842.58/5,758.97 = 1,868.65/x
  3. Step 3: Cross multiply
    3,842.58x = 5,758.97 × 1,868.65
  4. Step 4: Simplify right side
    3,842.58x = 10,761,489.95
  5. Step 5: Solve for x
    x = 10,761,489.95/3,842.58
  6. Step 6: Final answer
    x = 2,800.59

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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.