Home / 3,845.20-5,768.70-1,248.14

Finding the Fourth Proportional to 3,845.20, 5,768.70 and 1,248.14

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Solution

The fourth proportional to 3,845.20, 5,768.70 and 1,248.14 is: 1,872.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,845.20 : 5,768.70 = 1,248.14 : x
  2. Step 2: Convert to fraction form
    3,845.20/5,768.70 = 1,248.14/x
  3. Step 3: Cross multiply
    3,845.20x = 5,768.70 × 1,248.14
  4. Step 4: Simplify right side
    3,845.20x = 7,200,145.22
  5. Step 5: Solve for x
    x = 7,200,145.22/3,845.20
  6. Step 6: Final answer
    x = 1,872.50

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Find fourth proportional to 3,846.20, 5,770.20 and 1,249.14
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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.