Home / 2,479.80-3,715.71-1,818.60

Finding the Fourth Proportional to 2,479.80, 3,715.71 and 1,818.60

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Solution

The fourth proportional to 2,479.80, 3,715.71 and 1,818.60 is: 2,724.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,479.80 : 3,715.71 = 1,818.60 : x
  2. Step 2: Convert to fraction form
    2,479.80/3,715.71 = 1,818.60/x
  3. Step 3: Cross multiply
    2,479.80x = 3,715.71 × 1,818.60
  4. Step 4: Simplify right side
    2,479.80x = 6,757,390.21
  5. Step 5: Solve for x
    x = 6,757,390.21/2,479.80
  6. Step 6: Final answer
    x = 2,724.97

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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.