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Finding the Fourth Proportional to 7,211, 10,816.50 and 2,017.10

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Solution

The fourth proportional to 7,211, 10,816.50 and 2,017.10 is: 3,025.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,211 : 10,816.50 = 2,017.10 : x
  2. Step 2: Convert to fraction form
    7,211/10,816.50 = 2,017.10/x
  3. Step 3: Cross multiply
    7,211x = 10,816.50 × 2,017.10
  4. Step 4: Simplify right side
    7,211x = 21,817,962.15
  5. Step 5: Solve for x
    x = 21,817,962.15/7,211
  6. Step 6: Final answer
    x = 3,025.65

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Double scale
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Similar ratio
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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.