Home / 2,773.20-4,165.80-1,678.08

Finding the Fourth Proportional to 2,773.20, 4,165.80 and 1,678.08

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Solution

The fourth proportional to 2,773.20, 4,165.80 and 1,678.08 is: 2,520.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,773.20 : 4,165.80 = 1,678.08 : x
  2. Step 2: Convert to fraction form
    2,773.20/4,165.80 = 1,678.08/x
  3. Step 3: Cross multiply
    2,773.20x = 4,165.80 × 1,678.08
  4. Step 4: Simplify right side
    2,773.20x = 6,990,545.66
  5. Step 5: Solve for x
    x = 6,990,545.66/2,773.20
  6. Step 6: Final answer
    x = 2,520.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.