Home / 3,479.72-5,219.55-2,790.71

Finding the Fourth Proportional to 3,479.72, 5,219.55 and 2,790.71

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Solution

The fourth proportional to 3,479.72, 5,219.55 and 2,790.71 is: 4,186.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,479.72 : 5,219.55 = 2,790.71 : x
  2. Step 2: Convert to fraction form
    3,479.72/5,219.55 = 2,790.71/x
  3. Step 3: Cross multiply
    3,479.72x = 5,219.55 × 2,790.71
  4. Step 4: Simplify right side
    3,479.72x = 14,566,263.43
  5. Step 5: Solve for x
    x = 14,566,263.43/3,479.72
  6. Step 6: Final answer
    x = 4,186.05

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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.