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Finding the Fourth Proportional to 2,579.81, 3,560.14 and 1,400.88

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Solution

The fourth proportional to 2,579.81, 3,560.14 and 1,400.88 is: 1,933.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,579.81 : 3,560.14 = 1,400.88 : x
  2. Step 2: Convert to fraction form
    2,579.81/3,560.14 = 1,400.88/x
  3. Step 3: Cross multiply
    2,579.81x = 3,560.14 × 1,400.88
  4. Step 4: Simplify right side
    2,579.81x = 4,987,344.02
  5. Step 5: Solve for x
    x = 4,987,344.02/2,579.81
  6. Step 6: Final answer
    x = 1,933.23

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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.