Home / 8,155.08-11,169.70-7,676.34

Finding the Fourth Proportional to 8,155.08, 11,169.70 and 7,676.34

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Solution

The fourth proportional to 8,155.08, 11,169.70 and 7,676.34 is: 10,513.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,155.08 : 11,169.70 = 7,676.34 : x
  2. Step 2: Convert to fraction form
    8,155.08/11,169.70 = 7,676.34/x
  3. Step 3: Cross multiply
    8,155.08x = 11,169.70 × 7,676.34
  4. Step 4: Simplify right side
    8,155.08x = 85,742,414.90
  5. Step 5: Solve for x
    x = 85,742,414.90/8,155.08
  6. Step 6: Final answer
    x = 10,513.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.