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Finding the Fourth Proportional to 6,453.60, 8,905.62 and 3,800.40

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Solution

The fourth proportional to 6,453.60, 8,905.62 and 3,800.40 is: 5,244.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,453.60 : 8,905.62 = 3,800.40 : x
  2. Step 2: Convert to fraction form
    6,453.60/8,905.62 = 3,800.40/x
  3. Step 3: Cross multiply
    6,453.60x = 8,905.62 × 3,800.40
  4. Step 4: Simplify right side
    6,453.60x = 33,844,918.25
  5. Step 5: Solve for x
    x = 33,844,918.25/6,453.60
  6. Step 6: Final answer
    x = 5,244.35

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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.