Home / 3,174.60-4,761.90-2,190.45

Finding the Fourth Proportional to 3,174.60, 4,761.90 and 2,190.45

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Solution

The fourth proportional to 3,174.60, 4,761.90 and 2,190.45 is: 3,285.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,174.60 : 4,761.90 = 2,190.45 : x
  2. Step 2: Convert to fraction form
    3,174.60/4,761.90 = 2,190.45/x
  3. Step 3: Cross multiply
    3,174.60x = 4,761.90 × 2,190.45
  4. Step 4: Simplify right side
    3,174.60x = 10,430,703.86
  5. Step 5: Solve for x
    x = 10,430,703.86/3,174.60
  6. Step 6: Final answer
    x = 3,285.68

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1.5x scale

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.