Home / 3,985.45-5,977.37-3,787.86

Finding the Fourth Proportional to 3,985.45, 5,977.37 and 3,787.86

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Solution

The fourth proportional to 3,985.45, 5,977.37 and 3,787.86 is: 5,681.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,985.45 : 5,977.37 = 3,787.86 : x
  2. Step 2: Convert to fraction form
    3,985.45/5,977.37 = 3,787.86/x
  3. Step 3: Cross multiply
    3,985.45x = 5,977.37 × 3,787.86
  4. Step 4: Simplify right side
    3,985.45x = 22,641,440.73
  5. Step 5: Solve for x
    x = 22,641,440.73/3,985.45
  6. Step 6: Final answer
    x = 5,681.02

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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.