Home / 5,127.84-7,076.75-2,889.51

Finding the Fourth Proportional to 5,127.84, 7,076.75 and 2,889.51

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Solution

The fourth proportional to 5,127.84, 7,076.75 and 2,889.51 is: 3,987.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,127.84 : 7,076.75 = 2,889.51 : x
  2. Step 2: Convert to fraction form
    5,127.84/7,076.75 = 2,889.51/x
  3. Step 3: Cross multiply
    5,127.84x = 7,076.75 × 2,889.51
  4. Step 4: Simplify right side
    5,127.84x = 20,448,339.89
  5. Step 5: Solve for x
    x = 20,448,339.89/5,127.84
  6. Step 6: Final answer
    x = 3,987.71

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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.