Home / 5,884.38-8,120.85-3,891.48

Finding the Fourth Proportional to 5,884.38, 8,120.85 and 3,891.48

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Solution

The fourth proportional to 5,884.38, 8,120.85 and 3,891.48 is: 5,370.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,884.38 : 8,120.85 = 3,891.48 : x
  2. Step 2: Convert to fraction form
    5,884.38/8,120.85 = 3,891.48/x
  3. Step 3: Cross multiply
    5,884.38x = 8,120.85 × 3,891.48
  4. Step 4: Simplify right side
    5,884.38x = 31,602,125.36
  5. Step 5: Solve for x
    x = 31,602,125.36/5,884.38
  6. Step 6: Final answer
    x = 5,370.51

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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.