Home / 3,135.80-4,703.37-1,287.11

Finding the Fourth Proportional to 3,135.80, 4,703.37 and 1,287.11

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Solution

The fourth proportional to 3,135.80, 4,703.37 and 1,287.11 is: 1,930.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,135.80 : 4,703.37 = 1,287.11 : x
  2. Step 2: Convert to fraction form
    3,135.80/4,703.37 = 1,287.11/x
  3. Step 3: Cross multiply
    3,135.80x = 4,703.37 × 1,287.11
  4. Step 4: Simplify right side
    3,135.80x = 6,053,754.56
  5. Step 5: Solve for x
    x = 6,053,754.56/3,135.80
  6. Step 6: Final answer
    x = 1,930.53

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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.