Home / 1,779.33-2,454.63-1,115.85

Finding the Fourth Proportional to 1,779.33, 2,454.63 and 1,115.85

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Solution

The fourth proportional to 1,779.33, 2,454.63 and 1,115.85 is: 1,539.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,779.33 : 2,454.63 = 1,115.85 : x
  2. Step 2: Convert to fraction form
    1,779.33/2,454.63 = 1,115.85/x
  3. Step 3: Cross multiply
    1,779.33x = 2,454.63 × 1,115.85
  4. Step 4: Simplify right side
    1,779.33x = 2,738,993.31
  5. Step 5: Solve for x
    x = 2,738,993.31/1,779.33
  6. Step 6: Final answer
    x = 1,539.34

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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.