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Finding the Fourth Proportional to 2,714.10, 4,071.15 and 1,620.60

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Solution

The fourth proportional to 2,714.10, 4,071.15 and 1,620.60 is: 2,430.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,714.10 : 4,071.15 = 1,620.60 : x
  2. Step 2: Convert to fraction form
    2,714.10/4,071.15 = 1,620.60/x
  3. Step 3: Cross multiply
    2,714.10x = 4,071.15 × 1,620.60
  4. Step 4: Simplify right side
    2,714.10x = 6,597,705.69
  5. Step 5: Solve for x
    x = 6,597,705.69/2,714.10
  6. Step 6: Final answer
    x = 2,430.90

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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.