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Finding the Fourth Proportional to 7,222.28, 9,963.76 and 4,865.18

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Solution

The fourth proportional to 7,222.28, 9,963.76 and 4,865.18 is: 6,711.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,222.28 : 9,963.76 = 4,865.18 : x
  2. Step 2: Convert to fraction form
    7,222.28/9,963.76 = 4,865.18/x
  3. Step 3: Cross multiply
    7,222.28x = 9,963.76 × 4,865.18
  4. Step 4: Simplify right side
    7,222.28x = 48,475,485.88
  5. Step 5: Solve for x
    x = 48,475,485.88/7,222.28
  6. Step 6: Final answer
    x = 6,711.94

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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.