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Finding the Fourth Proportional to 2,798.65, 4,197.98 and 949.95

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Solution

The fourth proportional to 2,798.65, 4,197.98 and 949.95 is: 1,424.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,798.65 : 4,197.98 = 949.95 : x
  2. Step 2: Convert to fraction form
    2,798.65/4,197.98 = 949.95/x
  3. Step 3: Cross multiply
    2,798.65x = 4,197.98 × 949.95
  4. Step 4: Simplify right side
    2,798.65x = 3,987,871.10
  5. Step 5: Solve for x
    x = 3,987,871.10/2,798.65
  6. Step 6: Final answer
    x = 1,424.93

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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.