Home / 7,768.72-10,720.82-4,231.92

Finding the Fourth Proportional to 7,768.72, 10,720.82 and 4,231.92

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Solution

The fourth proportional to 7,768.72, 10,720.82 and 4,231.92 is: 5,840.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,768.72 : 10,720.82 = 4,231.92 : x
  2. Step 2: Convert to fraction form
    7,768.72/10,720.82 = 4,231.92/x
  3. Step 3: Cross multiply
    7,768.72x = 10,720.82 × 4,231.92
  4. Step 4: Simplify right side
    7,768.72x = 45,369,652.57
  5. Step 5: Solve for x
    x = 45,369,652.57/7,768.72
  6. Step 6: Final answer
    x = 5,840.04

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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.