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Finding the Fourth Proportional to 1,359.91, 2,027.94 and 1,284.88

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Solution

The fourth proportional to 1,359.91, 2,027.94 and 1,284.88 is: 1,916.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,359.91 : 2,027.94 = 1,284.88 : x
  2. Step 2: Convert to fraction form
    1,359.91/2,027.94 = 1,284.88/x
  3. Step 3: Cross multiply
    1,359.91x = 2,027.94 × 1,284.88
  4. Step 4: Simplify right side
    1,359.91x = 2,605,659.55
  5. Step 5: Solve for x
    x = 2,605,659.55/1,359.91
  6. Step 6: Final answer
    x = 1,916.05

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.