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Finding the Fourth Proportional to 6,392.67, 8,820.14 and 4,302.87

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Solution

The fourth proportional to 6,392.67, 8,820.14 and 4,302.87 is: 5,936.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,392.67 : 8,820.14 = 4,302.87 : x
  2. Step 2: Convert to fraction form
    6,392.67/8,820.14 = 4,302.87/x
  3. Step 3: Cross multiply
    6,392.67x = 8,820.14 × 4,302.87
  4. Step 4: Simplify right side
    6,392.67x = 37,951,894.29
  5. Step 5: Solve for x
    x = 37,951,894.29/6,392.67
  6. Step 6: Final answer
    x = 5,936.78

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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.