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Finding the Fourth Proportional to 4,000.07, 5,999.19 and 1,078.61

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Solution

The fourth proportional to 4,000.07, 5,999.19 and 1,078.61 is: 1,617.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,000.07 : 5,999.19 = 1,078.61 : x
  2. Step 2: Convert to fraction form
    4,000.07/5,999.19 = 1,078.61/x
  3. Step 3: Cross multiply
    4,000.07x = 5,999.19 × 1,078.61
  4. Step 4: Simplify right side
    4,000.07x = 6,470,756.33
  5. Step 5: Solve for x
    x = 6,470,756.33/4,000.07
  6. Step 6: Final answer
    x = 1,617.66

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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.