Home / 3,384.80-5,070.32-2,147.76

Finding the Fourth Proportional to 3,384.80, 5,070.32 and 2,147.76

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Solution

The fourth proportional to 3,384.80, 5,070.32 and 2,147.76 is: 3,217.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,384.80 : 5,070.32 = 2,147.76 : x
  2. Step 2: Convert to fraction form
    3,384.80/5,070.32 = 2,147.76/x
  3. Step 3: Cross multiply
    3,384.80x = 5,070.32 × 2,147.76
  4. Step 4: Simplify right side
    3,384.80x = 10,889,830.48
  5. Step 5: Solve for x
    x = 10,889,830.48/3,384.80
  6. Step 6: Final answer
    x = 3,217.27

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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.