Home / 8,121.25-11,207.34-4,395.25

Finding the Fourth Proportional to 8,121.25, 11,207.34 and 4,395.25

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Solution

The fourth proportional to 8,121.25, 11,207.34 and 4,395.25 is: 6,065.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,121.25 : 11,207.34 = 4,395.25 : x
  2. Step 2: Convert to fraction form
    8,121.25/11,207.34 = 4,395.25/x
  3. Step 3: Cross multiply
    8,121.25x = 11,207.34 × 4,395.25
  4. Step 4: Simplify right side
    8,121.25x = 49,259,061.14
  5. Step 5: Solve for x
    x = 49,259,061.14/8,121.25
  6. Step 6: Final answer
    x = 6,065.45

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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.