Home / 6,686.72-9,228.96-3,892.64

Finding the Fourth Proportional to 6,686.72, 9,228.96 and 3,892.64

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Solution

The fourth proportional to 6,686.72, 9,228.96 and 3,892.64 is: 5,372.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,686.72 : 9,228.96 = 3,892.64 : x
  2. Step 2: Convert to fraction form
    6,686.72/9,228.96 = 3,892.64/x
  3. Step 3: Cross multiply
    6,686.72x = 9,228.96 × 3,892.64
  4. Step 4: Simplify right side
    6,686.72x = 35,925,018.85
  5. Step 5: Solve for x
    x = 35,925,018.85/6,686.72
  6. Step 6: Final answer
    x = 5,372.59

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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.