Home / 2,628.52-3,938.10-1,240.36

Finding the Fourth Proportional to 2,628.52, 3,938.10 and 1,240.36

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Solution

The fourth proportional to 2,628.52, 3,938.10 and 1,240.36 is: 1,858.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,628.52 : 3,938.10 = 1,240.36 : x
  2. Step 2: Convert to fraction form
    2,628.52/3,938.10 = 1,240.36/x
  3. Step 3: Cross multiply
    2,628.52x = 3,938.10 × 1,240.36
  4. Step 4: Simplify right side
    2,628.52x = 4,884,661.72
  5. Step 5: Solve for x
    x = 4,884,661.72/2,628.52
  6. Step 6: Final answer
    x = 1,858.33

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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.