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Finding the Fourth Proportional to 1,963.85, 2,710.19 and 1,079.69

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Solution

The fourth proportional to 1,963.85, 2,710.19 and 1,079.69 is: 1,490.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,963.85 : 2,710.19 = 1,079.69 : x
  2. Step 2: Convert to fraction form
    1,963.85/2,710.19 = 1,079.69/x
  3. Step 3: Cross multiply
    1,963.85x = 2,710.19 × 1,079.69
  4. Step 4: Simplify right side
    1,963.85x = 2,926,146.09
  5. Step 5: Solve for x
    x = 2,926,146.09/1,963.85
  6. Step 6: Final answer
    x = 1,490.00

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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.