Home / 2,579.40-3,557.28-2,081.88

Finding the Fourth Proportional to 2,579.40, 3,557.28 and 2,081.88

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Solution

The fourth proportional to 2,579.40, 3,557.28 and 2,081.88 is: 2,871.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,579.40 : 3,557.28 = 2,081.88 : x
  2. Step 2: Convert to fraction form
    2,579.40/3,557.28 = 2,081.88/x
  3. Step 3: Cross multiply
    2,579.40x = 3,557.28 × 2,081.88
  4. Step 4: Simplify right side
    2,579.40x = 7,405,830.09
  5. Step 5: Solve for x
    x = 7,405,830.09/2,579.40
  6. Step 6: Final answer
    x = 2,871.14

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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.