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Finding the Fourth Proportional to 5,267.79, 7,901.68 and 1,372.09

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Solution

The fourth proportional to 5,267.79, 7,901.68 and 1,372.09 is: 2,058.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,267.79 : 7,901.68 = 1,372.09 : x
  2. Step 2: Convert to fraction form
    5,267.79/7,901.68 = 1,372.09/x
  3. Step 3: Cross multiply
    5,267.79x = 7,901.68 × 1,372.09
  4. Step 4: Simplify right side
    5,267.79x = 10,841,816.11
  5. Step 5: Solve for x
    x = 10,841,816.11/5,267.79
  6. Step 6: Final answer
    x = 2,058.13

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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.