Home / 1,485.20-2,229.60-1,474.40

Finding the Fourth Proportional to 1,485.20, 2,229.60 and 1,474.40

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Solution

The fourth proportional to 1,485.20, 2,229.60 and 1,474.40 is: 2,213.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,485.20 : 2,229.60 = 1,474.40 : x
  2. Step 2: Convert to fraction form
    1,485.20/2,229.60 = 1,474.40/x
  3. Step 3: Cross multiply
    1,485.20x = 2,229.60 × 1,474.40
  4. Step 4: Simplify right side
    1,485.20x = 3,287,322.24
  5. Step 5: Solve for x
    x = 3,287,322.24/1,485.20
  6. Step 6: Final answer
    x = 2,213.39

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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.