Home / 3,852.20-5,779.10-1,902.12

Finding the Fourth Proportional to 3,852.20, 5,779.10 and 1,902.12

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Solution

The fourth proportional to 3,852.20, 5,779.10 and 1,902.12 is: 2,853.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,852.20 : 5,779.10 = 1,902.12 : x
  2. Step 2: Convert to fraction form
    3,852.20/5,779.10 = 1,902.12/x
  3. Step 3: Cross multiply
    3,852.20x = 5,779.10 × 1,902.12
  4. Step 4: Simplify right side
    3,852.20x = 10,992,541.69
  5. Step 5: Solve for x
    x = 10,992,541.69/3,852.20
  6. Step 6: Final answer
    x = 2,853.58

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Half scale
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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.