Home / 5,127.73-7,076.28-2,889.61

Finding the Fourth Proportional to 5,127.73, 7,076.28 and 2,889.61

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Solution

The fourth proportional to 5,127.73, 7,076.28 and 2,889.61 is: 3,987.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,127.73 : 7,076.28 = 2,889.61 : x
  2. Step 2: Convert to fraction form
    5,127.73/7,076.28 = 2,889.61/x
  3. Step 3: Cross multiply
    5,127.73x = 7,076.28 × 2,889.61
  4. Step 4: Simplify right side
    5,127.73x = 20,447,689.45
  5. Step 5: Solve for x
    x = 20,447,689.45/5,127.73
  6. Step 6: Final answer
    x = 3,987.67

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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.