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Finding the Fourth Proportional to 1,999.46, 2,999.18 and 1,656.74

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Solution

The fourth proportional to 1,999.46, 2,999.18 and 1,656.74 is: 2,485.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,999.46 : 2,999.18 = 1,656.74 : x
  2. Step 2: Convert to fraction form
    1,999.46/2,999.18 = 1,656.74/x
  3. Step 3: Cross multiply
    1,999.46x = 2,999.18 × 1,656.74
  4. Step 4: Simplify right side
    1,999.46x = 4,968,850.62
  5. Step 5: Solve for x
    x = 4,968,850.62/1,999.46
  6. Step 6: Final answer
    x = 2,485.10

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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.