Home / 5,127.79-7,076.50-2,889.54

Finding the Fourth Proportional to 5,127.79, 7,076.50 and 2,889.54

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Solution

The fourth proportional to 5,127.79, 7,076.50 and 2,889.54 is: 3,987.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,127.79 : 7,076.50 = 2,889.54 : x
  2. Step 2: Convert to fraction form
    5,127.79/7,076.50 = 2,889.54/x
  3. Step 3: Cross multiply
    5,127.79x = 7,076.50 × 2,889.54
  4. Step 4: Simplify right side
    5,127.79x = 20,447,815.36
  5. Step 5: Solve for x
    x = 20,447,815.36/5,127.79
  6. Step 6: Final answer
    x = 3,987.65

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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.