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Finding the Fourth Proportional to 4,881.65, 7,321.05 and 2,801.30

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Solution

The fourth proportional to 4,881.65, 7,321.05 and 2,801.30 is: 4,201.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,881.65 : 7,321.05 = 2,801.30 : x
  2. Step 2: Convert to fraction form
    4,881.65/7,321.05 = 2,801.30/x
  3. Step 3: Cross multiply
    4,881.65x = 7,321.05 × 2,801.30
  4. Step 4: Simplify right side
    4,881.65x = 20,508,406.75
  5. Step 5: Solve for x
    x = 20,508,406.75/4,881.65
  6. Step 6: Final answer
    x = 4,201.13

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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.