Home / 5,127.78-7,076.34-2,769.92

Finding the Fourth Proportional to 5,127.78, 7,076.34 and 2,769.92

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Solution

The fourth proportional to 5,127.78, 7,076.34 and 2,769.92 is: 3,822.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,127.78 : 7,076.34 = 2,769.92 : x
  2. Step 2: Convert to fraction form
    5,127.78/7,076.34 = 2,769.92/x
  3. Step 3: Cross multiply
    5,127.78x = 7,076.34 × 2,769.92
  4. Step 4: Simplify right side
    5,127.78x = 19,600,895.69
  5. Step 5: Solve for x
    x = 19,600,895.69/5,127.78
  6. Step 6: Final answer
    x = 3,822.49

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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.