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Finding the Fourth Proportional to 5,537.70, 7,738.20 and 5,537.70

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Solution

The fourth proportional to 5,537.70, 7,738.20 and 5,537.70 is: 7,738.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,537.70 : 7,738.20 = 5,537.70 : x
  2. Step 2: Convert to fraction form
    5,537.70/7,738.20 = 5,537.70/x
  3. Step 3: Cross multiply
    5,537.70x = 7,738.20 × 5,537.70
  4. Step 4: Simplify right side
    5,537.70x = 42,851,830.14
  5. Step 5: Solve for x
    x = 42,851,830.14/5,537.70
  6. Step 6: Final answer
    x = 7,738.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.