Home / 8,121.28-11,207.28-4,763.45

Finding the Fourth Proportional to 8,121.28, 11,207.28 and 4,763.45

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Solution

The fourth proportional to 8,121.28, 11,207.28 and 4,763.45 is: 6,573.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,121.28 : 11,207.28 = 4,763.45 : x
  2. Step 2: Convert to fraction form
    8,121.28/11,207.28 = 4,763.45/x
  3. Step 3: Cross multiply
    8,121.28x = 11,207.28 × 4,763.45
  4. Step 4: Simplify right side
    8,121.28x = 53,385,317.92
  5. Step 5: Solve for x
    x = 53,385,317.92/8,121.28
  6. Step 6: Final answer
    x = 6,573.51

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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.