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Finding the Fourth Proportional to 3,108.48, 4,668.48 and 1,878.18

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Solution

The fourth proportional to 3,108.48, 4,668.48 and 1,878.18 is: 2,820.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,108.48 : 4,668.48 = 1,878.18 : x
  2. Step 2: Convert to fraction form
    3,108.48/4,668.48 = 1,878.18/x
  3. Step 3: Cross multiply
    3,108.48x = 4,668.48 × 1,878.18
  4. Step 4: Simplify right side
    3,108.48x = 8,768,245.77
  5. Step 5: Solve for x
    x = 8,768,245.77/3,108.48
  6. Step 6: Final answer
    x = 2,820.75

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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.