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Finding the Fourth Proportional to 4,000.06, 6,000.18 and 1,078.39

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Solution

The fourth proportional to 4,000.06, 6,000.18 and 1,078.39 is: 1,617.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,000.06 : 6,000.18 = 1,078.39 : x
  2. Step 2: Convert to fraction form
    4,000.06/6,000.18 = 1,078.39/x
  3. Step 3: Cross multiply
    4,000.06x = 6,000.18 × 1,078.39
  4. Step 4: Simplify right side
    4,000.06x = 6,470,534.11
  5. Step 5: Solve for x
    x = 6,470,534.11/4,000.06
  6. Step 6: Final answer
    x = 1,617.61

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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.