Home / 1,371.45-2,055.75-676.77

Finding the Fourth Proportional to 1,371.45, 2,055.75 and 676.77

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Solution

The fourth proportional to 1,371.45, 2,055.75 and 676.77 is: 1,014.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,371.45 : 2,055.75 = 676.77 : x
  2. Step 2: Convert to fraction form
    1,371.45/2,055.75 = 676.77/x
  3. Step 3: Cross multiply
    1,371.45x = 2,055.75 × 676.77
  4. Step 4: Simplify right side
    1,371.45x = 1,391,269.93
  5. Step 5: Solve for x
    x = 1,391,269.93/1,371.45
  6. Step 6: Final answer
    x = 1,014.45

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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.