Home / 2,453.56-3,385.92-1,405.64

Finding the Fourth Proportional to 2,453.56, 3,385.92 and 1,405.64

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Solution

The fourth proportional to 2,453.56, 3,385.92 and 1,405.64 is: 1,939.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,453.56 : 3,385.92 = 1,405.64 : x
  2. Step 2: Convert to fraction form
    2,453.56/3,385.92 = 1,405.64/x
  3. Step 3: Cross multiply
    2,453.56x = 3,385.92 × 1,405.64
  4. Step 4: Simplify right side
    2,453.56x = 4,759,384.59
  5. Step 5: Solve for x
    x = 4,759,384.59/2,453.56
  6. Step 6: Final answer
    x = 1,939.79

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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.