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Finding the Fourth Proportional to 1,513.92, 2,085.92 and 1,163.84

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Solution

The fourth proportional to 1,513.92, 2,085.92 and 1,163.84 is: 1,603.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,513.92 : 2,085.92 = 1,163.84 : x
  2. Step 2: Convert to fraction form
    1,513.92/2,085.92 = 1,163.84/x
  3. Step 3: Cross multiply
    1,513.92x = 2,085.92 × 1,163.84
  4. Step 4: Simplify right side
    1,513.92x = 2,427,677.13
  5. Step 5: Solve for x
    x = 2,427,677.13/1,513.92
  6. Step 6: Final answer
    x = 1,603.57

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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.