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Finding the Fourth Proportional to 4,905.28, 7,359.20 and 2,969.92

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Solution

The fourth proportional to 4,905.28, 7,359.20 and 2,969.92 is: 4,455.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,905.28 : 7,359.20 = 2,969.92 : x
  2. Step 2: Convert to fraction form
    4,905.28/7,359.20 = 2,969.92/x
  3. Step 3: Cross multiply
    4,905.28x = 7,359.20 × 2,969.92
  4. Step 4: Simplify right side
    4,905.28x = 21,856,235.26
  5. Step 5: Solve for x
    x = 21,856,235.26/4,905.28
  6. Step 6: Final answer
    x = 4,455.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.