Home / 1,371.08-2,056.37-677.51

Finding the Fourth Proportional to 1,371.08, 2,056.37 and 677.51

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Solution

The fourth proportional to 1,371.08, 2,056.37 and 677.51 is: 1,016.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,371.08 : 2,056.37 = 677.51 : x
  2. Step 2: Convert to fraction form
    1,371.08/2,056.37 = 677.51/x
  3. Step 3: Cross multiply
    1,371.08x = 2,056.37 × 677.51
  4. Step 4: Simplify right side
    1,371.08x = 1,393,220.66
  5. Step 5: Solve for x
    x = 1,393,220.66/1,371.08
  6. Step 6: Final answer
    x = 1,016.15

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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.