Home / 3,107.37-4,287.68-1,780.83

Finding the Fourth Proportional to 3,107.37, 4,287.68 and 1,780.83

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Solution

The fourth proportional to 3,107.37, 4,287.68 and 1,780.83 is: 2,457.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,107.37 : 4,287.68 = 1,780.83 : x
  2. Step 2: Convert to fraction form
    3,107.37/4,287.68 = 1,780.83/x
  3. Step 3: Cross multiply
    3,107.37x = 4,287.68 × 1,780.83
  4. Step 4: Simplify right side
    3,107.37x = 7,635,620.27
  5. Step 5: Solve for x
    x = 7,635,620.27/3,107.37
  6. Step 6: Final answer
    x = 2,457.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.