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Finding the Fourth Proportional to 5,490.78, 7,577.00 and 3,101.03

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Solution

The fourth proportional to 5,490.78, 7,577.00 and 3,101.03 is: 4,279.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,490.78 : 7,577.00 = 3,101.03 : x
  2. Step 2: Convert to fraction form
    5,490.78/7,577.00 = 3,101.03/x
  3. Step 3: Cross multiply
    5,490.78x = 7,577.00 × 3,101.03
  4. Step 4: Simplify right side
    5,490.78x = 23,496,474.18
  5. Step 5: Solve for x
    x = 23,496,474.18/5,490.78
  6. Step 6: Final answer
    x = 4,279.26

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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.