Home / 5,148.29-7,104.62-2,790.43

Finding the Fourth Proportional to 5,148.29, 7,104.62 and 2,790.43

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Solution

The fourth proportional to 5,148.29, 7,104.62 and 2,790.43 is: 3,850.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,148.29 : 7,104.62 = 2,790.43 : x
  2. Step 2: Convert to fraction form
    5,148.29/7,104.62 = 2,790.43/x
  3. Step 3: Cross multiply
    5,148.29x = 7,104.62 × 2,790.43
  4. Step 4: Simplify right side
    5,148.29x = 19,824,934.00
  5. Step 5: Solve for x
    x = 19,824,934.00/5,148.29
  6. Step 6: Final answer
    x = 3,850.78

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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.