Home / 5,243.28-7,243.68-3,914.69

Finding the Fourth Proportional to 5,243.28, 7,243.68 and 3,914.69

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Solution

The fourth proportional to 5,243.28, 7,243.68 and 3,914.69 is: 5,408.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,243.28 : 7,243.68 = 3,914.69 : x
  2. Step 2: Convert to fraction form
    5,243.28/7,243.68 = 3,914.69/x
  3. Step 3: Cross multiply
    5,243.28x = 7,243.68 × 3,914.69
  4. Step 4: Simplify right side
    5,243.28x = 28,356,725.44
  5. Step 5: Solve for x
    x = 28,356,725.44/5,243.28
  6. Step 6: Final answer
    x = 5,408.20

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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.