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Finding the Fourth Proportional to 5,263.11, 7,263.02 and 2,905.20

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Solution

The fourth proportional to 5,263.11, 7,263.02 and 2,905.20 is: 4,009.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,263.11 : 7,263.02 = 2,905.20 : x
  2. Step 2: Convert to fraction form
    5,263.11/7,263.02 = 2,905.20/x
  3. Step 3: Cross multiply
    5,263.11x = 7,263.02 × 2,905.20
  4. Step 4: Simplify right side
    5,263.11x = 21,100,489.39
  5. Step 5: Solve for x
    x = 21,100,489.39/5,263.11
  6. Step 6: Final answer
    x = 4,009.13

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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.