Home / 3,156.40-4,731.37-1,591.66

Finding the Fourth Proportional to 3,156.40, 4,731.37 and 1,591.66

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Solution

The fourth proportional to 3,156.40, 4,731.37 and 1,591.66 is: 2,385.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,156.40 : 4,731.37 = 1,591.66 : x
  2. Step 2: Convert to fraction form
    3,156.40/4,731.37 = 1,591.66/x
  3. Step 3: Cross multiply
    3,156.40x = 4,731.37 × 1,591.66
  4. Step 4: Simplify right side
    3,156.40x = 7,530,732.37
  5. Step 5: Solve for x
    x = 7,530,732.37/3,156.40
  6. Step 6: Final answer
    x = 2,385.86

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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.