Home / 2,479.87-3,425.25-1,815.79

Finding the Fourth Proportional to 2,479.87, 3,425.25 and 1,815.79

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Solution

The fourth proportional to 2,479.87, 3,425.25 and 1,815.79 is: 2,508.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,479.87 : 3,425.25 = 1,815.79 : x
  2. Step 2: Convert to fraction form
    2,479.87/3,425.25 = 1,815.79/x
  3. Step 3: Cross multiply
    2,479.87x = 3,425.25 × 1,815.79
  4. Step 4: Simplify right side
    2,479.87x = 6,219,508.49
  5. Step 5: Solve for x
    x = 6,219,508.49/2,479.87
  6. Step 6: Final answer
    x = 2,508.00

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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.