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Finding the Fourth Proportional to 2,447.05, 3,669.48 and 715.81

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Solution

The fourth proportional to 2,447.05, 3,669.48 and 715.81 is: 1,073.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,447.05 : 3,669.48 = 715.81 : x
  2. Step 2: Convert to fraction form
    2,447.05/3,669.48 = 715.81/x
  3. Step 3: Cross multiply
    2,447.05x = 3,669.48 × 715.81
  4. Step 4: Simplify right side
    2,447.05x = 2,626,650.48
  5. Step 5: Solve for x
    x = 2,626,650.48/2,447.05
  6. Step 6: Final answer
    x = 1,073.39

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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.