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Finding the Fourth Proportional to 3,999.69, 6,000.55 and 1,807.90

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Solution

The fourth proportional to 3,999.69, 6,000.55 and 1,807.90 is: 2,712.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,999.69 : 6,000.55 = 1,807.90 : x
  2. Step 2: Convert to fraction form
    3,999.69/6,000.55 = 1,807.90/x
  3. Step 3: Cross multiply
    3,999.69x = 6,000.55 × 1,807.90
  4. Step 4: Simplify right side
    3,999.69x = 10,848,374.82
  5. Step 5: Solve for x
    x = 10,848,374.82/3,999.69
  6. Step 6: Final answer
    x = 2,712.30

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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.