Home / 8,639.54-11,921.70-4,862.62

Finding the Fourth Proportional to 8,639.54, 11,921.70 and 4,862.62

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Solution

The fourth proportional to 8,639.54, 11,921.70 and 4,862.62 is: 6,709.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,639.54 : 11,921.70 = 4,862.62 : x
  2. Step 2: Convert to fraction form
    8,639.54/11,921.70 = 4,862.62/x
  3. Step 3: Cross multiply
    8,639.54x = 11,921.70 × 4,862.62
  4. Step 4: Simplify right side
    8,639.54x = 57,970,696.85
  5. Step 5: Solve for x
    x = 57,970,696.85/8,639.54
  6. Step 6: Final answer
    x = 6,709.93

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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.