Home / 2,748.86-4,122.32-1,188.80

Finding the Fourth Proportional to 2,748.86, 4,122.32 and 1,188.80

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Solution

The fourth proportional to 2,748.86, 4,122.32 and 1,188.80 is: 1,782.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,748.86 : 4,122.32 = 1,188.80 : x
  2. Step 2: Convert to fraction form
    2,748.86/4,122.32 = 1,188.80/x
  3. Step 3: Cross multiply
    2,748.86x = 4,122.32 × 1,188.80
  4. Step 4: Simplify right side
    2,748.86x = 4,900,614.02
  5. Step 5: Solve for x
    x = 4,900,614.02/2,748.86
  6. Step 6: Final answer
    x = 1,782.78

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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.