Home / 1,628.96-2,439.77-1,238.36

Finding the Fourth Proportional to 1,628.96, 2,439.77 and 1,238.36

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Solution

The fourth proportional to 1,628.96, 2,439.77 and 1,238.36 is: 1,854.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,628.96 : 2,439.77 = 1,238.36 : x
  2. Step 2: Convert to fraction form
    1,628.96/2,439.77 = 1,238.36/x
  3. Step 3: Cross multiply
    1,628.96x = 2,439.77 × 1,238.36
  4. Step 4: Simplify right side
    1,628.96x = 3,021,295.19
  5. Step 5: Solve for x
    x = 3,021,295.19/1,628.96
  6. Step 6: Final answer
    x = 1,854.74

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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.