Home / 3,198.80-4,411.08-3,127.28

Finding the Fourth Proportional to 3,198.80, 4,411.08 and 3,127.28

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Solution

The fourth proportional to 3,198.80, 4,411.08 and 3,127.28 is: 4,312.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,198.80 : 4,411.08 = 3,127.28 : x
  2. Step 2: Convert to fraction form
    3,198.80/4,411.08 = 3,127.28/x
  3. Step 3: Cross multiply
    3,198.80x = 4,411.08 × 3,127.28
  4. Step 4: Simplify right side
    3,198.80x = 13,794,682.26
  5. Step 5: Solve for x
    x = 13,794,682.26/3,198.80
  6. Step 6: Final answer
    x = 4,312.46

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1.5x scale

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.