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Finding the Fourth Proportional to 6,441.40, 8,889.12 and 3,753.28

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Solution

The fourth proportional to 6,441.40, 8,889.12 and 3,753.28 is: 5,179.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,441.40 : 8,889.12 = 3,753.28 : x
  2. Step 2: Convert to fraction form
    6,441.40/8,889.12 = 3,753.28/x
  3. Step 3: Cross multiply
    6,441.40x = 8,889.12 × 3,753.28
  4. Step 4: Simplify right side
    6,441.40x = 33,363,356.31
  5. Step 5: Solve for x
    x = 33,363,356.31/6,441.40
  6. Step 6: Final answer
    x = 5,179.52

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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.