Home / 4,221.60-6,327.12-2,912.64

Finding the Fourth Proportional to 4,221.60, 6,327.12 and 2,912.64

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Solution

The fourth proportional to 4,221.60, 6,327.12 and 2,912.64 is: 4,365.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,221.60 : 6,327.12 = 2,912.64 : x
  2. Step 2: Convert to fraction form
    4,221.60/6,327.12 = 2,912.64/x
  3. Step 3: Cross multiply
    4,221.60x = 6,327.12 × 2,912.64
  4. Step 4: Simplify right side
    4,221.60x = 18,428,622.80
  5. Step 5: Solve for x
    x = 18,428,622.80/4,221.60
  6. Step 6: Final answer
    x = 4,365.32

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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.