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Finding the Fourth Proportional to 2,899.62, 4,000.86 and 1,721.07

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Solution

The fourth proportional to 2,899.62, 4,000.86 and 1,721.07 is: 2,374.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,899.62 : 4,000.86 = 1,721.07 : x
  2. Step 2: Convert to fraction form
    2,899.62/4,000.86 = 1,721.07/x
  3. Step 3: Cross multiply
    2,899.62x = 4,000.86 × 1,721.07
  4. Step 4: Simplify right side
    2,899.62x = 6,885,760.12
  5. Step 5: Solve for x
    x = 6,885,760.12/2,899.62
  6. Step 6: Final answer
    x = 2,374.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.