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Finding the Fourth Proportional to 6,522.40, 9,761.20 and 3,927.20

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Solution

The fourth proportional to 6,522.40, 9,761.20 and 3,927.20 is: 5,877.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,522.40 : 9,761.20 = 3,927.20 : x
  2. Step 2: Convert to fraction form
    6,522.40/9,761.20 = 3,927.20/x
  3. Step 3: Cross multiply
    6,522.40x = 9,761.20 × 3,927.20
  4. Step 4: Simplify right side
    6,522.40x = 38,334,184.64
  5. Step 5: Solve for x
    x = 38,334,184.64/6,522.40
  6. Step 6: Final answer
    x = 5,877.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.