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Finding the Fourth Proportional to 3,999.55, 5,985.98 and 3,009.97

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Solution

The fourth proportional to 3,999.55, 5,985.98 and 3,009.97 is: 4,504.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,999.55 : 5,985.98 = 3,009.97 : x
  2. Step 2: Convert to fraction form
    3,999.55/5,985.98 = 3,009.97/x
  3. Step 3: Cross multiply
    3,999.55x = 5,985.98 × 3,009.97
  4. Step 4: Simplify right side
    3,999.55x = 18,017,575.24
  5. Step 5: Solve for x
    x = 18,017,575.24/3,999.55
  6. Step 6: Final answer
    x = 4,504.90

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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.