Home / 8,114.99-12,147.81-5,195.34

Finding the Fourth Proportional to 8,114.99, 12,147.81 and 5,195.34

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Solution

The fourth proportional to 8,114.99, 12,147.81 and 5,195.34 is: 7,777.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,114.99 : 12,147.81 = 5,195.34 : x
  2. Step 2: Convert to fraction form
    8,114.99/12,147.81 = 5,195.34/x
  3. Step 3: Cross multiply
    8,114.99x = 12,147.81 × 5,195.34
  4. Step 4: Simplify right side
    8,114.99x = 63,112,003.21
  5. Step 5: Solve for x
    x = 63,112,003.21/8,114.99
  6. Step 6: Final answer
    x = 7,777.21

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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.