Home / 5,127.74-7,076.49-2,889.71

Finding the Fourth Proportional to 5,127.74, 7,076.49 and 2,889.71

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Solution

The fourth proportional to 5,127.74, 7,076.49 and 2,889.71 is: 3,987.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,127.74 : 7,076.49 = 2,889.71 : x
  2. Step 2: Convert to fraction form
    5,127.74/7,076.49 = 2,889.71/x
  3. Step 3: Cross multiply
    5,127.74x = 7,076.49 × 2,889.71
  4. Step 4: Simplify right side
    5,127.74x = 20,448,968.54
  5. Step 5: Solve for x
    x = 20,448,968.54/5,127.74
  6. Step 6: Final answer
    x = 3,987.91

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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.