Home / 7,757.24-10,705.20-4,220.60

Finding the Fourth Proportional to 7,757.24, 10,705.20 and 4,220.60

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Solution

The fourth proportional to 7,757.24, 10,705.20 and 4,220.60 is: 5,824.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,757.24 : 10,705.20 = 4,220.60 : x
  2. Step 2: Convert to fraction form
    7,757.24/10,705.20 = 4,220.60/x
  3. Step 3: Cross multiply
    7,757.24x = 10,705.20 × 4,220.60
  4. Step 4: Simplify right side
    7,757.24x = 45,182,367.12
  5. Step 5: Solve for x
    x = 45,182,367.12/7,757.24
  6. Step 6: Final answer
    x = 5,824.54

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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.