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Finding the Fourth Proportional to 3,788.28, 5,671.98 and 2,860.98

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Solution

The fourth proportional to 3,788.28, 5,671.98 and 2,860.98 is: 4,283.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,788.28 : 5,671.98 = 2,860.98 : x
  2. Step 2: Convert to fraction form
    3,788.28/5,671.98 = 2,860.98/x
  3. Step 3: Cross multiply
    3,788.28x = 5,671.98 × 2,860.98
  4. Step 4: Simplify right side
    3,788.28x = 16,227,421.34
  5. Step 5: Solve for x
    x = 16,227,421.34/3,788.28
  6. Step 6: Final answer
    x = 4,283.59

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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.