Home / 5,100.14-7,042.68-3,215.09

Finding the Fourth Proportional to 5,100.14, 7,042.68 and 3,215.09

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Solution

The fourth proportional to 5,100.14, 7,042.68 and 3,215.09 is: 4,439.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,100.14 : 7,042.68 = 3,215.09 : x
  2. Step 2: Convert to fraction form
    5,100.14/7,042.68 = 3,215.09/x
  3. Step 3: Cross multiply
    5,100.14x = 7,042.68 × 3,215.09
  4. Step 4: Simplify right side
    5,100.14x = 22,642,814.83
  5. Step 5: Solve for x
    x = 22,642,814.83/5,100.14
  6. Step 6: Final answer
    x = 4,439.65

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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.