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Finding the Fourth Proportional to 3,374.97, 5,062.68 and 909.81

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Solution

The fourth proportional to 3,374.97, 5,062.68 and 909.81 is: 1,364.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,374.97 : 5,062.68 = 909.81 : x
  2. Step 2: Convert to fraction form
    3,374.97/5,062.68 = 909.81/x
  3. Step 3: Cross multiply
    3,374.97x = 5,062.68 × 909.81
  4. Step 4: Simplify right side
    3,374.97x = 4,606,060.09
  5. Step 5: Solve for x
    x = 4,606,060.09/3,374.97
  6. Step 6: Final answer
    x = 1,364.77

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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.