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Finding the Fourth Proportional to 2,720.10, 4,080.15 and 1,333.65

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Solution

The fourth proportional to 2,720.10, 4,080.15 and 1,333.65 is: 2,000.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,720.10 : 4,080.15 = 1,333.65 : x
  2. Step 2: Convert to fraction form
    2,720.10/4,080.15 = 1,333.65/x
  3. Step 3: Cross multiply
    2,720.10x = 4,080.15 × 1,333.65
  4. Step 4: Simplify right side
    2,720.10x = 5,441,492.05
  5. Step 5: Solve for x
    x = 5,441,492.05/2,720.10
  6. Step 6: Final answer
    x = 2,000.48

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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.