Home / 1,779.15-2,447.78-1,730.55

Finding the Fourth Proportional to 1,779.15, 2,447.78 and 1,730.55

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Solution

The fourth proportional to 1,779.15, 2,447.78 and 1,730.55 is: 2,380.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,779.15 : 2,447.78 = 1,730.55 : x
  2. Step 2: Convert to fraction form
    1,779.15/2,447.78 = 1,730.55/x
  3. Step 3: Cross multiply
    1,779.15x = 2,447.78 × 1,730.55
  4. Step 4: Simplify right side
    1,779.15x = 4,235,997.03
  5. Step 5: Solve for x
    x = 4,235,997.03/1,779.15
  6. Step 6: Final answer
    x = 2,380.91

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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.