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Finding the Fourth Proportional to 6,469.28, 8,927.30 and 3,955.60

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Solution

The fourth proportional to 6,469.28, 8,927.30 and 3,955.60 is: 5,458.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,469.28 : 8,927.30 = 3,955.60 : x
  2. Step 2: Convert to fraction form
    6,469.28/8,927.30 = 3,955.60/x
  3. Step 3: Cross multiply
    6,469.28x = 8,927.30 × 3,955.60
  4. Step 4: Simplify right side
    6,469.28x = 35,312,827.88
  5. Step 5: Solve for x
    x = 35,312,827.88/6,469.28
  6. Step 6: Final answer
    x = 5,458.54

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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.