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Finding the Fourth Proportional to 2,451, 3,381.66 and 1,455.78

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Solution

The fourth proportional to 2,451, 3,381.66 and 1,455.78 is: 2,008.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,451 : 3,381.66 = 1,455.78 : x
  2. Step 2: Convert to fraction form
    2,451/3,381.66 = 1,455.78/x
  3. Step 3: Cross multiply
    2,451x = 3,381.66 × 1,455.78
  4. Step 4: Simplify right side
    2,451x = 4,922,952.99
  5. Step 5: Solve for x
    x = 4,922,952.99/2,451
  6. Step 6: Final answer
    x = 2,008.55

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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.