Home / 6,431.20-8,874.02-3,911.96

Finding the Fourth Proportional to 6,431.20, 8,874.02 and 3,911.96

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Solution

The fourth proportional to 6,431.20, 8,874.02 and 3,911.96 is: 5,397.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,431.20 : 8,874.02 = 3,911.96 : x
  2. Step 2: Convert to fraction form
    6,431.20/8,874.02 = 3,911.96/x
  3. Step 3: Cross multiply
    6,431.20x = 8,874.02 × 3,911.96
  4. Step 4: Simplify right side
    6,431.20x = 34,714,843.24
  5. Step 5: Solve for x
    x = 34,714,843.24/6,431.20
  6. Step 6: Final answer
    x = 5,397.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.