Home / 4,200.64-6,300.96-1,122.64

Finding the Fourth Proportional to 4,200.64, 6,300.96 and 1,122.64

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Solution

The fourth proportional to 4,200.64, 6,300.96 and 1,122.64 is: 1,683.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,200.64 : 6,300.96 = 1,122.64 : x
  2. Step 2: Convert to fraction form
    4,200.64/6,300.96 = 1,122.64/x
  3. Step 3: Cross multiply
    4,200.64x = 6,300.96 × 1,122.64
  4. Step 4: Simplify right side
    4,200.64x = 7,073,709.73
  5. Step 5: Solve for x
    x = 7,073,709.73/4,200.64
  6. Step 6: Final answer
    x = 1,683.96

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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.