Home / 7,124.78-10,688.79-2,743.49

Finding the Fourth Proportional to 7,124.78, 10,688.79 and 2,743.49

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Solution

The fourth proportional to 7,124.78, 10,688.79 and 2,743.49 is: 4,115.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,124.78 : 10,688.79 = 2,743.49 : x
  2. Step 2: Convert to fraction form
    7,124.78/10,688.79 = 2,743.49/x
  3. Step 3: Cross multiply
    7,124.78x = 10,688.79 × 2,743.49
  4. Step 4: Simplify right side
    7,124.78x = 29,324,588.48
  5. Step 5: Solve for x
    x = 29,324,588.48/7,124.78
  6. Step 6: Final answer
    x = 4,115.86

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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.