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Finding the Fourth Proportional to 3,540.76, 4,885.68 and 1,968.82

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Solution

The fourth proportional to 3,540.76, 4,885.68 and 1,968.82 is: 2,716.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,540.76 : 4,885.68 = 1,968.82 : x
  2. Step 2: Convert to fraction form
    3,540.76/4,885.68 = 1,968.82/x
  3. Step 3: Cross multiply
    3,540.76x = 4,885.68 × 1,968.82
  4. Step 4: Simplify right side
    3,540.76x = 9,619,024.50
  5. Step 5: Solve for x
    x = 9,619,024.50/3,540.76
  6. Step 6: Final answer
    x = 2,716.66

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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.