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Finding the Fourth Proportional to 6,443.34, 8,890.47 and 3,790.14

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Solution

The fourth proportional to 6,443.34, 8,890.47 and 3,790.14 is: 5,229.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,443.34 : 8,890.47 = 3,790.14 : x
  2. Step 2: Convert to fraction form
    6,443.34/8,890.47 = 3,790.14/x
  3. Step 3: Cross multiply
    6,443.34x = 8,890.47 × 3,790.14
  4. Step 4: Simplify right side
    6,443.34x = 33,696,125.97
  5. Step 5: Solve for x
    x = 33,696,125.97/6,443.34
  6. Step 6: Final answer
    x = 5,229.61

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1.5x scale

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.