Home / 7,076.30-9,765.36-3,889.76

Finding the Fourth Proportional to 7,076.30, 9,765.36 and 3,889.76

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Solution

The fourth proportional to 7,076.30, 9,765.36 and 3,889.76 is: 5,367.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,076.30 : 9,765.36 = 3,889.76 : x
  2. Step 2: Convert to fraction form
    7,076.30/9,765.36 = 3,889.76/x
  3. Step 3: Cross multiply
    7,076.30x = 9,765.36 × 3,889.76
  4. Step 4: Simplify right side
    7,076.30x = 37,984,857.89
  5. Step 5: Solve for x
    x = 37,984,857.89/7,076.30
  6. Step 6: Final answer
    x = 5,367.90

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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.