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Finding the Fourth Proportional to 7,220.48, 10,827.02 and 3,321.50

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Solution

The fourth proportional to 7,220.48, 10,827.02 and 3,321.50 is: 4,980.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,220.48 : 10,827.02 = 3,321.50 : x
  2. Step 2: Convert to fraction form
    7,220.48/10,827.02 = 3,321.50/x
  3. Step 3: Cross multiply
    7,220.48x = 10,827.02 × 3,321.50
  4. Step 4: Simplify right side
    7,220.48x = 35,961,946.93
  5. Step 5: Solve for x
    x = 35,961,946.93/7,220.48
  6. Step 6: Final answer
    x = 4,980.55

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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.