Home / 8,107.47-11,177.21-5,121.81

Finding the Fourth Proportional to 8,107.47, 11,177.21 and 5,121.81

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Solution

The fourth proportional to 8,107.47, 11,177.21 and 5,121.81 is: 7,061.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,107.47 : 11,177.21 = 5,121.81 : x
  2. Step 2: Convert to fraction form
    8,107.47/11,177.21 = 5,121.81/x
  3. Step 3: Cross multiply
    8,107.47x = 11,177.21 × 5,121.81
  4. Step 4: Simplify right side
    8,107.47x = 57,247,520.34
  5. Step 5: Solve for x
    x = 57,247,520.34/8,107.47
  6. Step 6: Final answer
    x = 7,061.08

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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.