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Finding the Fourth Proportional to 9,797.84, 13,520.64 and 5,321.49

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Solution

The fourth proportional to 9,797.84, 13,520.64 and 5,321.49 is: 7,343.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,797.84 : 13,520.64 = 5,321.49 : x
  2. Step 2: Convert to fraction form
    9,797.84/13,520.64 = 5,321.49/x
  3. Step 3: Cross multiply
    9,797.84x = 13,520.64 × 5,321.49
  4. Step 4: Simplify right side
    9,797.84x = 71,949,950.55
  5. Step 5: Solve for x
    x = 71,949,950.55/9,797.84
  6. Step 6: Final answer
    x = 7,343.45

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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.