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Finding the Fourth Proportional to 1,720.58, 2,579.14 and 887.99

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Solution

The fourth proportional to 1,720.58, 2,579.14 and 887.99 is: 1,331.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,720.58 : 2,579.14 = 887.99 : x
  2. Step 2: Convert to fraction form
    1,720.58/2,579.14 = 887.99/x
  3. Step 3: Cross multiply
    1,720.58x = 2,579.14 × 887.99
  4. Step 4: Simplify right side
    1,720.58x = 2,290,251.98
  5. Step 5: Solve for x
    x = 2,290,251.98/1,720.58
  6. Step 6: Final answer
    x = 1,331.09

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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.