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Finding the Fourth Proportional to 6,453.78, 8,905.23 and 3,621.30

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Solution

The fourth proportional to 6,453.78, 8,905.23 and 3,621.30 is: 4,996.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,453.78 : 8,905.23 = 3,621.30 : x
  2. Step 2: Convert to fraction form
    6,453.78/8,905.23 = 3,621.30/x
  3. Step 3: Cross multiply
    6,453.78x = 8,905.23 × 3,621.30
  4. Step 4: Simplify right side
    6,453.78x = 32,248,509.40
  5. Step 5: Solve for x
    x = 32,248,509.40/6,453.78
  6. Step 6: Final answer
    x = 4,996.84

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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.