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Finding the Fourth Proportional to 1,937.76, 2,908.40 and 965.92

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Solution

The fourth proportional to 1,937.76, 2,908.40 and 965.92 is: 1,449.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,937.76 : 2,908.40 = 965.92 : x
  2. Step 2: Convert to fraction form
    1,937.76/2,908.40 = 965.92/x
  3. Step 3: Cross multiply
    1,937.76x = 2,908.40 × 965.92
  4. Step 4: Simplify right side
    1,937.76x = 2,809,281.73
  5. Step 5: Solve for x
    x = 2,809,281.73/1,937.76
  6. Step 6: Final answer
    x = 1,449.76

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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.