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Finding the Fourth Proportional to 1,909.34, 2,863.62 and 676.60

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Solution

The fourth proportional to 1,909.34, 2,863.62 and 676.60 is: 1,014.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,909.34 : 2,863.62 = 676.60 : x
  2. Step 2: Convert to fraction form
    1,909.34/2,863.62 = 676.60/x
  3. Step 3: Cross multiply
    1,909.34x = 2,863.62 × 676.60
  4. Step 4: Simplify right side
    1,909.34x = 1,937,525.29
  5. Step 5: Solve for x
    x = 1,937,525.29/1,909.34
  6. Step 6: Final answer
    x = 1,014.76

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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.