Home / 5,127.89-7,076.05-2,889.36

Finding the Fourth Proportional to 5,127.89, 7,076.05 and 2,889.36

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Solution

The fourth proportional to 5,127.89, 7,076.05 and 2,889.36 is: 3,987.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,127.89 : 7,076.05 = 2,889.36 : x
  2. Step 2: Convert to fraction form
    5,127.89/7,076.05 = 2,889.36/x
  3. Step 3: Cross multiply
    5,127.89x = 7,076.05 × 2,889.36
  4. Step 4: Simplify right side
    5,127.89x = 20,445,248.60
  5. Step 5: Solve for x
    x = 20,445,248.60/5,127.89
  6. Step 6: Final answer
    x = 3,987.07

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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.