Home / 2,779.43-3,829.01-1,938.60

Finding the Fourth Proportional to 2,779.43, 3,829.01 and 1,938.60

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Solution

The fourth proportional to 2,779.43, 3,829.01 and 1,938.60 is: 2,670.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,779.43 : 3,829.01 = 1,938.60 : x
  2. Step 2: Convert to fraction form
    2,779.43/3,829.01 = 1,938.60/x
  3. Step 3: Cross multiply
    2,779.43x = 3,829.01 × 1,938.60
  4. Step 4: Simplify right side
    2,779.43x = 7,422,909.09
  5. Step 5: Solve for x
    x = 7,422,909.09/2,779.43
  6. Step 6: Final answer
    x = 2,670.66

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1.5x scale

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.