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Finding the Fourth Proportional to 4,000.37, 6,000.77 and 1,078.90

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Solution

The fourth proportional to 4,000.37, 6,000.77 and 1,078.90 is: 1,618.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,000.37 : 6,000.77 = 1,078.90 : x
  2. Step 2: Convert to fraction form
    4,000.37/6,000.77 = 1,078.90/x
  3. Step 3: Cross multiply
    4,000.37x = 6,000.77 × 1,078.90
  4. Step 4: Simplify right side
    4,000.37x = 6,474,218.45
  5. Step 5: Solve for x
    x = 6,474,218.45/4,000.37
  6. Step 6: Final answer
    x = 1,618.41

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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.