Home / 5,120.82-7,688.52-4,885.92

Finding the Fourth Proportional to 5,120.82, 7,688.52 and 4,885.92

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Solution

The fourth proportional to 5,120.82, 7,688.52 and 4,885.92 is: 7,335.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,120.82 : 7,688.52 = 4,885.92 : x
  2. Step 2: Convert to fraction form
    5,120.82/7,688.52 = 4,885.92/x
  3. Step 3: Cross multiply
    5,120.82x = 7,688.52 × 4,885.92
  4. Step 4: Simplify right side
    5,120.82x = 37,565,493.64
  5. Step 5: Solve for x
    x = 37,565,493.64/5,120.82
  6. Step 6: Final answer
    x = 7,335.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.