Home / 3,115.36-4,669.80-1,265.76

Finding the Fourth Proportional to 3,115.36, 4,669.80 and 1,265.76

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Solution

The fourth proportional to 3,115.36, 4,669.80 and 1,265.76 is: 1,897.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115.36 : 4,669.80 = 1,265.76 : x
  2. Step 2: Convert to fraction form
    3,115.36/4,669.80 = 1,265.76/x
  3. Step 3: Cross multiply
    3,115.36x = 4,669.80 × 1,265.76
  4. Step 4: Simplify right side
    3,115.36x = 5,910,846.05
  5. Step 5: Solve for x
    x = 5,910,846.05/3,115.36
  6. Step 6: Final answer
    x = 1,897.32

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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.