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Finding the Fourth Proportional to 1,935.98, 2,904.41 and 619.82

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Solution

The fourth proportional to 1,935.98, 2,904.41 and 619.82 is: 929.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,935.98 : 2,904.41 = 619.82 : x
  2. Step 2: Convert to fraction form
    1,935.98/2,904.41 = 619.82/x
  3. Step 3: Cross multiply
    1,935.98x = 2,904.41 × 619.82
  4. Step 4: Simplify right side
    1,935.98x = 1,800,213.93
  5. Step 5: Solve for x
    x = 1,800,213.93/1,935.98
  6. Step 6: Final answer
    x = 929.87

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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.