Home / 8,065.20-11,132.70-5,086

Finding the Fourth Proportional to 8,065.20, 11,132.70 and 5,086

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Solution

The fourth proportional to 8,065.20, 11,132.70 and 5,086 is: 7,020.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,065.20 : 11,132.70 = 5,086 : x
  2. Step 2: Convert to fraction form
    8,065.20/11,132.70 = 5,086/x
  3. Step 3: Cross multiply
    8,065.20x = 11,132.70 × 5,086
  4. Step 4: Simplify right side
    8,065.20x = 56,620,912.20
  5. Step 5: Solve for x
    x = 56,620,912.20/8,065.20
  6. Step 6: Final answer
    x = 7,020.40

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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.