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Finding the Fourth Proportional to 6,261.60, 9,388.60 and 4,311.64

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Solution

The fourth proportional to 6,261.60, 9,388.60 and 4,311.64 is: 6,464.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,261.60 : 9,388.60 = 4,311.64 : x
  2. Step 2: Convert to fraction form
    6,261.60/9,388.60 = 4,311.64/x
  3. Step 3: Cross multiply
    6,261.60x = 9,388.60 × 4,311.64
  4. Step 4: Simplify right side
    6,261.60x = 40,480,263.30
  5. Step 5: Solve for x
    x = 40,480,263.30/6,261.60
  6. Step 6: Final answer
    x = 6,464.84

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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.