Home / 6,489.21-9,732.03-1,808.86

Finding the Fourth Proportional to 6,489.21, 9,732.03 and 1,808.86

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Solution

The fourth proportional to 6,489.21, 9,732.03 and 1,808.86 is: 2,712.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,489.21 : 9,732.03 = 1,808.86 : x
  2. Step 2: Convert to fraction form
    6,489.21/9,732.03 = 1,808.86/x
  3. Step 3: Cross multiply
    6,489.21x = 9,732.03 × 1,808.86
  4. Step 4: Simplify right side
    6,489.21x = 17,603,879.79
  5. Step 5: Solve for x
    x = 17,603,879.79/6,489.21
  6. Step 6: Final answer
    x = 2,712.79

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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.