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Finding the Fourth Proportional to 2,126.93, 3,188.03 and 893.97

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Solution

The fourth proportional to 2,126.93, 3,188.03 and 893.97 is: 1,339.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,126.93 : 3,188.03 = 893.97 : x
  2. Step 2: Convert to fraction form
    2,126.93/3,188.03 = 893.97/x
  3. Step 3: Cross multiply
    2,126.93x = 3,188.03 × 893.97
  4. Step 4: Simplify right side
    2,126.93x = 2,849,998.71
  5. Step 5: Solve for x
    x = 2,849,998.71/2,126.93
  6. Step 6: Final answer
    x = 1,339.96

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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.