Home / 6,405.92-8,840.21-3,753.35

Finding the Fourth Proportional to 6,405.92, 8,840.21 and 3,753.35

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Solution

The fourth proportional to 6,405.92, 8,840.21 and 3,753.35 is: 5,179.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,405.92 : 8,840.21 = 3,753.35 : x
  2. Step 2: Convert to fraction form
    6,405.92/8,840.21 = 3,753.35/x
  3. Step 3: Cross multiply
    6,405.92x = 8,840.21 × 3,753.35
  4. Step 4: Simplify right side
    6,405.92x = 33,180,339.24
  5. Step 5: Solve for x
    x = 33,180,339.24/6,405.92
  6. Step 6: Final answer
    x = 5,179.64

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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.