Home / 6,282.72-9,421.65-2,121.61

Finding the Fourth Proportional to 6,282.72, 9,421.65 and 2,121.61

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Solution

The fourth proportional to 6,282.72, 9,421.65 and 2,121.61 is: 3,181.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,282.72 : 9,421.65 = 2,121.61 : x
  2. Step 2: Convert to fraction form
    6,282.72/9,421.65 = 2,121.61/x
  3. Step 3: Cross multiply
    6,282.72x = 9,421.65 × 2,121.61
  4. Step 4: Simplify right side
    6,282.72x = 19,989,066.86
  5. Step 5: Solve for x
    x = 19,989,066.86/6,282.72
  6. Step 6: Final answer
    x = 3,181.59

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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.