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Finding the Fourth Proportional to 3,859.61, 5,790.47 and 1,262.52

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Solution

The fourth proportional to 3,859.61, 5,790.47 and 1,262.52 is: 1,894.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,859.61 : 5,790.47 = 1,262.52 : x
  2. Step 2: Convert to fraction form
    3,859.61/5,790.47 = 1,262.52/x
  3. Step 3: Cross multiply
    3,859.61x = 5,790.47 × 1,262.52
  4. Step 4: Simplify right side
    3,859.61x = 7,310,577.87
  5. Step 5: Solve for x
    x = 7,310,577.87/3,859.61
  6. Step 6: Final answer
    x = 1,894.13

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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.