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Finding the Fourth Proportional to 6,453.50, 8,901.87 and 3,934.40

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Solution

The fourth proportional to 6,453.50, 8,901.87 and 3,934.40 is: 5,427.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,453.50 : 8,901.87 = 3,934.40 : x
  2. Step 2: Convert to fraction form
    6,453.50/8,901.87 = 3,934.40/x
  3. Step 3: Cross multiply
    6,453.50x = 8,901.87 × 3,934.40
  4. Step 4: Simplify right side
    6,453.50x = 35,023,517.33
  5. Step 5: Solve for x
    x = 35,023,517.33/6,453.50
  6. Step 6: Final answer
    x = 5,427.06

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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.