Home / 5,127.87-7,076.37-2,889.94

Finding the Fourth Proportional to 5,127.87, 7,076.37 and 2,889.94

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Solution

The fourth proportional to 5,127.87, 7,076.37 and 2,889.94 is: 3,988.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,127.87 : 7,076.37 = 2,889.94 : x
  2. Step 2: Convert to fraction form
    5,127.87/7,076.37 = 2,889.94/x
  3. Step 3: Cross multiply
    5,127.87x = 7,076.37 × 2,889.94
  4. Step 4: Simplify right side
    5,127.87x = 20,450,284.72
  5. Step 5: Solve for x
    x = 20,450,284.72/5,127.87
  6. Step 6: Final answer
    x = 3,988.07

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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.