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Finding the Fourth Proportional to 2,899.98, 4,001.94 and 1,721.07

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Solution

The fourth proportional to 2,899.98, 4,001.94 and 1,721.07 is: 2,375.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,899.98 : 4,001.94 = 1,721.07 : x
  2. Step 2: Convert to fraction form
    2,899.98/4,001.94 = 1,721.07/x
  3. Step 3: Cross multiply
    2,899.98x = 4,001.94 × 1,721.07
  4. Step 4: Simplify right side
    2,899.98x = 6,887,618.88
  5. Step 5: Solve for x
    x = 6,887,618.88/2,899.98
  6. Step 6: Final answer
    x = 2,375.06

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1.5x scale

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.