Home / 7,913.94-11,862.37-5,142.61

Finding the Fourth Proportional to 7,913.94, 11,862.37 and 5,142.61

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Solution

The fourth proportional to 7,913.94, 11,862.37 and 5,142.61 is: 7,708.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,913.94 : 11,862.37 = 5,142.61 : x
  2. Step 2: Convert to fraction form
    7,913.94/11,862.37 = 5,142.61/x
  3. Step 3: Cross multiply
    7,913.94x = 11,862.37 × 5,142.61
  4. Step 4: Simplify right side
    7,913.94x = 61,003,511.58
  5. Step 5: Solve for x
    x = 61,003,511.58/7,913.94
  6. Step 6: Final answer
    x = 7,708.36

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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.