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Finding the Fourth Proportional to 4,247, 6,340.64 and 3,630.92

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Solution

The fourth proportional to 4,247, 6,340.64 and 3,630.92 is: 5,420.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,247 : 6,340.64 = 3,630.92 : x
  2. Step 2: Convert to fraction form
    4,247/6,340.64 = 3,630.92/x
  3. Step 3: Cross multiply
    4,247x = 6,340.64 × 3,630.92
  4. Step 4: Simplify right side
    4,247x = 23,022,356.59
  5. Step 5: Solve for x
    x = 23,022,356.59/4,247
  6. Step 6: Final answer
    x = 5,420.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.