Home / 3,430.92-5,142.40-1,348.86

Finding the Fourth Proportional to 3,430.92, 5,142.40 and 1,348.86

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Solution

The fourth proportional to 3,430.92, 5,142.40 and 1,348.86 is: 2,021.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,430.92 : 5,142.40 = 1,348.86 : x
  2. Step 2: Convert to fraction form
    3,430.92/5,142.40 = 1,348.86/x
  3. Step 3: Cross multiply
    3,430.92x = 5,142.40 × 1,348.86
  4. Step 4: Simplify right side
    3,430.92x = 6,936,377.66
  5. Step 5: Solve for x
    x = 6,936,377.66/3,430.92
  6. Step 6: Final answer
    x = 2,021.73

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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.