Home / 8,930.68-13,394.10-5,639.38

Finding the Fourth Proportional to 8,930.68, 13,394.10 and 5,639.38

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Solution

The fourth proportional to 8,930.68, 13,394.10 and 5,639.38 is: 8,457.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,930.68 : 13,394.10 = 5,639.38 : x
  2. Step 2: Convert to fraction form
    8,930.68/13,394.10 = 5,639.38/x
  3. Step 3: Cross multiply
    8,930.68x = 13,394.10 × 5,639.38
  4. Step 4: Simplify right side
    8,930.68x = 75,534,419.66
  5. Step 5: Solve for x
    x = 75,534,419.66/8,930.68
  6. Step 6: Final answer
    x = 8,457.86

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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.