Home / 8,025.60-11,078.36-7,184.78

Finding the Fourth Proportional to 8,025.60, 11,078.36 and 7,184.78

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Solution

The fourth proportional to 8,025.60, 11,078.36 and 7,184.78 is: 9,917.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,025.60 : 11,078.36 = 7,184.78 : x
  2. Step 2: Convert to fraction form
    8,025.60/11,078.36 = 7,184.78/x
  3. Step 3: Cross multiply
    8,025.60x = 11,078.36 × 7,184.78
  4. Step 4: Simplify right side
    8,025.60x = 79,595,579.36
  5. Step 5: Solve for x
    x = 79,595,579.36/8,025.60
  6. Step 6: Final answer
    x = 9,917.71

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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.