Home / 1,628.78-2,438.30-1,141.56

Finding the Fourth Proportional to 1,628.78, 2,438.30 and 1,141.56

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Solution

The fourth proportional to 1,628.78, 2,438.30 and 1,141.56 is: 1,708.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,628.78 : 2,438.30 = 1,141.56 : x
  2. Step 2: Convert to fraction form
    1,628.78/2,438.30 = 1,141.56/x
  3. Step 3: Cross multiply
    1,628.78x = 2,438.30 × 1,141.56
  4. Step 4: Simplify right side
    1,628.78x = 2,783,468.60
  5. Step 5: Solve for x
    x = 2,783,468.60/1,628.78
  6. Step 6: Final answer
    x = 1,708.93

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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.