Home / 6,422.12-8,863.54-3,905.02

Finding the Fourth Proportional to 6,422.12, 8,863.54 and 3,905.02

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Solution

The fourth proportional to 6,422.12, 8,863.54 and 3,905.02 is: 5,389.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,422.12 : 8,863.54 = 3,905.02 : x
  2. Step 2: Convert to fraction form
    6,422.12/8,863.54 = 3,905.02/x
  3. Step 3: Cross multiply
    6,422.12x = 8,863.54 × 3,905.02
  4. Step 4: Simplify right side
    6,422.12x = 34,612,300.97
  5. Step 5: Solve for x
    x = 34,612,300.97/6,422.12
  6. Step 6: Final answer
    x = 5,389.54

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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.