Home / 8,114.39-12,162.10-7,191.75

Finding the Fourth Proportional to 8,114.39, 12,162.10 and 7,191.75

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Solution

The fourth proportional to 8,114.39, 12,162.10 and 7,191.75 is: 10,779.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,114.39 : 12,162.10 = 7,191.75 : x
  2. Step 2: Convert to fraction form
    8,114.39/12,162.10 = 7,191.75/x
  3. Step 3: Cross multiply
    8,114.39x = 12,162.10 × 7,191.75
  4. Step 4: Simplify right side
    8,114.39x = 87,466,782.68
  5. Step 5: Solve for x
    x = 87,466,782.68/8,114.39
  6. Step 6: Final answer
    x = 10,779.22

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1.5x scale

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.