Home / 2,829.40-3,902.72-1,779.64

Finding the Fourth Proportional to 2,829.40, 3,902.72 and 1,779.64

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Solution

The fourth proportional to 2,829.40, 3,902.72 and 1,779.64 is: 2,454.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,829.40 : 3,902.72 = 1,779.64 : x
  2. Step 2: Convert to fraction form
    2,829.40/3,902.72 = 1,779.64/x
  3. Step 3: Cross multiply
    2,829.40x = 3,902.72 × 1,779.64
  4. Step 4: Simplify right side
    2,829.40x = 6,945,436.62
  5. Step 5: Solve for x
    x = 6,945,436.62/2,829.40
  6. Step 6: Final answer
    x = 2,454.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.