Home / 8,076.64-12,109.99-3,140.52

Finding the Fourth Proportional to 8,076.64, 12,109.99 and 3,140.52

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Solution

The fourth proportional to 8,076.64, 12,109.99 and 3,140.52 is: 4,708.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,076.64 : 12,109.99 = 3,140.52 : x
  2. Step 2: Convert to fraction form
    8,076.64/12,109.99 = 3,140.52/x
  3. Step 3: Cross multiply
    8,076.64x = 12,109.99 × 3,140.52
  4. Step 4: Simplify right side
    8,076.64x = 38,031,676.13
  5. Step 5: Solve for x
    x = 38,031,676.13/8,076.64
  6. Step 6: Final answer
    x = 4,708.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.