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Finding the Fourth Proportional to 4,000.22, 5,999.90 and 1,078.82

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Solution

The fourth proportional to 4,000.22, 5,999.90 and 1,078.82 is: 1,618.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,000.22 : 5,999.90 = 1,078.82 : x
  2. Step 2: Convert to fraction form
    4,000.22/5,999.90 = 1,078.82/x
  3. Step 3: Cross multiply
    4,000.22x = 5,999.90 × 1,078.82
  4. Step 4: Simplify right side
    4,000.22x = 6,472,812.12
  5. Step 5: Solve for x
    x = 6,472,812.12/4,000.22
  6. Step 6: Final answer
    x = 1,618.11

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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.