Home / 2,412.69-3,619.29-768.85

Finding the Fourth Proportional to 2,412.69, 3,619.29 and 768.85

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Solution

The fourth proportional to 2,412.69, 3,619.29 and 768.85 is: 1,153.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,412.69 : 3,619.29 = 768.85 : x
  2. Step 2: Convert to fraction form
    2,412.69/3,619.29 = 768.85/x
  3. Step 3: Cross multiply
    2,412.69x = 3,619.29 × 768.85
  4. Step 4: Simplify right side
    2,412.69x = 2,782,691.12
  5. Step 5: Solve for x
    x = 2,782,691.12/2,412.69
  6. Step 6: Final answer
    x = 1,153.36

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1.5x scale

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.