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Finding the Fourth Proportional to 7,024.64, 9,694 and 3,880.80

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Solution

The fourth proportional to 7,024.64, 9,694 and 3,880.80 is: 5,355.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,024.64 : 9,694 = 3,880.80 : x
  2. Step 2: Convert to fraction form
    7,024.64/9,694 = 3,880.80/x
  3. Step 3: Cross multiply
    7,024.64x = 9,694 × 3,880.80
  4. Step 4: Simplify right side
    7,024.64x = 37,620,475.20
  5. Step 5: Solve for x
    x = 37,620,475.20/7,024.64
  6. Step 6: Final answer
    x = 5,355.50

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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.