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Finding the Fourth Proportional to 6,453.84, 8,905.20 and 3,801.36

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Solution

The fourth proportional to 6,453.84, 8,905.20 and 3,801.36 is: 5,245.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,453.84 : 8,905.20 = 3,801.36 : x
  2. Step 2: Convert to fraction form
    6,453.84/8,905.20 = 3,801.36/x
  3. Step 3: Cross multiply
    6,453.84x = 8,905.20 × 3,801.36
  4. Step 4: Simplify right side
    6,453.84x = 33,851,871.07
  5. Step 5: Solve for x
    x = 33,851,871.07/6,453.84
  6. Step 6: Final answer
    x = 5,245.23

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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.