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Finding the Fourth Proportional to 2,654.59, 3,979.13 and 899

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Solution

The fourth proportional to 2,654.59, 3,979.13 and 899 is: 1,347.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,654.59 : 3,979.13 = 899 : x
  2. Step 2: Convert to fraction form
    2,654.59/3,979.13 = 899/x
  3. Step 3: Cross multiply
    2,654.59x = 3,979.13 × 899
  4. Step 4: Simplify right side
    2,654.59x = 3,577,237.87
  5. Step 5: Solve for x
    x = 3,577,237.87/2,654.59
  6. Step 6: Final answer
    x = 1,347.57

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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.