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Finding the Fourth Proportional to 6,278.40, 8,667 and 4,124.88

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Solution

The fourth proportional to 6,278.40, 8,667 and 4,124.88 is: 5,694.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,278.40 : 8,667 = 4,124.88 : x
  2. Step 2: Convert to fraction form
    6,278.40/8,667 = 4,124.88/x
  3. Step 3: Cross multiply
    6,278.40x = 8,667 × 4,124.88
  4. Step 4: Simplify right side
    6,278.40x = 35,750,334.96
  5. Step 5: Solve for x
    x = 35,750,334.96/6,278.40
  6. Step 6: Final answer
    x = 5,694.18

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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.