Home / 1,779.97-2,455.08-1,189.48

Finding the Fourth Proportional to 1,779.97, 2,455.08 and 1,189.48

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Solution

The fourth proportional to 1,779.97, 2,455.08 and 1,189.48 is: 1,640.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,779.97 : 2,455.08 = 1,189.48 : x
  2. Step 2: Convert to fraction form
    1,779.97/2,455.08 = 1,189.48/x
  3. Step 3: Cross multiply
    1,779.97x = 2,455.08 × 1,189.48
  4. Step 4: Simplify right side
    1,779.97x = 2,920,268.56
  5. Step 5: Solve for x
    x = 2,920,268.56/1,779.97
  6. Step 6: Final answer
    x = 1,640.63

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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.