Home / 6,405.21-8,840.61-4,046.90

Finding the Fourth Proportional to 6,405.21, 8,840.61 and 4,046.90

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Solution

The fourth proportional to 6,405.21, 8,840.61 and 4,046.90 is: 5,585.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,405.21 : 8,840.61 = 4,046.90 : x
  2. Step 2: Convert to fraction form
    6,405.21/8,840.61 = 4,046.90/x
  3. Step 3: Cross multiply
    6,405.21x = 8,840.61 × 4,046.90
  4. Step 4: Simplify right side
    6,405.21x = 35,777,020.41
  5. Step 5: Solve for x
    x = 35,777,020.41/6,405.21
  6. Step 6: Final answer
    x = 5,585.61

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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.