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Finding the Fourth Proportional to 1,889.91, 2,824.02 and 1,442.70

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Solution

The fourth proportional to 1,889.91, 2,824.02 and 1,442.70 is: 2,155.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,889.91 : 2,824.02 = 1,442.70 : x
  2. Step 2: Convert to fraction form
    1,889.91/2,824.02 = 1,442.70/x
  3. Step 3: Cross multiply
    1,889.91x = 2,824.02 × 1,442.70
  4. Step 4: Simplify right side
    1,889.91x = 4,074,195.93
  5. Step 5: Solve for x
    x = 4,074,195.93/1,889.91
  6. Step 6: Final answer
    x = 2,155.77

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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.