Home / 8,076.45-11,145.41-4,719.78

Finding the Fourth Proportional to 8,076.45, 11,145.41 and 4,719.78

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Solution

The fourth proportional to 8,076.45, 11,145.41 and 4,719.78 is: 6,513.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,076.45 : 11,145.41 = 4,719.78 : x
  2. Step 2: Convert to fraction form
    8,076.45/11,145.41 = 4,719.78/x
  3. Step 3: Cross multiply
    8,076.45x = 11,145.41 × 4,719.78
  4. Step 4: Simplify right side
    8,076.45x = 52,603,883.21
  5. Step 5: Solve for x
    x = 52,603,883.21/8,076.45
  6. Step 6: Final answer
    x = 6,513.24

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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.