Home / 2,841.28-3,922.89-1,779.47

Finding the Fourth Proportional to 2,841.28, 3,922.89 and 1,779.47

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Solution

The fourth proportional to 2,841.28, 3,922.89 and 1,779.47 is: 2,456.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,841.28 : 3,922.89 = 1,779.47 : x
  2. Step 2: Convert to fraction form
    2,841.28/3,922.89 = 1,779.47/x
  3. Step 3: Cross multiply
    2,841.28x = 3,922.89 × 1,779.47
  4. Step 4: Simplify right side
    2,841.28x = 6,980,653.49
  5. Step 5: Solve for x
    x = 6,980,653.49/2,841.28
  6. Step 6: Final answer
    x = 2,456.87

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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.