Home / 7,757.43-10,705.36-4,220.64

Finding the Fourth Proportional to 7,757.43, 10,705.36 and 4,220.64

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Solution

The fourth proportional to 7,757.43, 10,705.36 and 4,220.64 is: 5,824.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,757.43 : 10,705.36 = 4,220.64 : x
  2. Step 2: Convert to fraction form
    7,757.43/10,705.36 = 4,220.64/x
  3. Step 3: Cross multiply
    7,757.43x = 10,705.36 × 4,220.64
  4. Step 4: Simplify right side
    7,757.43x = 45,183,507.95
  5. Step 5: Solve for x
    x = 45,183,507.95/7,757.43
  6. Step 6: Final answer
    x = 5,824.55

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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.