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Finding the Fourth Proportional to 5,721.54, 7,891.64 and 5,250.96

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Solution

The fourth proportional to 5,721.54, 7,891.64 and 5,250.96 is: 7,242.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,721.54 : 7,891.64 = 5,250.96 : x
  2. Step 2: Convert to fraction form
    5,721.54/7,891.64 = 5,250.96/x
  3. Step 3: Cross multiply
    5,721.54x = 7,891.64 × 5,250.96
  4. Step 4: Simplify right side
    5,721.54x = 41,438,646.52
  5. Step 5: Solve for x
    x = 41,438,646.52/5,721.54
  6. Step 6: Final answer
    x = 7,242.58

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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.