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Finding the Fourth Proportional to 8,615.78, 12,924.88 and 4,233.41

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Solution

The fourth proportional to 8,615.78, 12,924.88 and 4,233.41 is: 6,350.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,615.78 : 12,924.88 = 4,233.41 : x
  2. Step 2: Convert to fraction form
    8,615.78/12,924.88 = 4,233.41/x
  3. Step 3: Cross multiply
    8,615.78x = 12,924.88 × 4,233.41
  4. Step 4: Simplify right side
    8,615.78x = 54,716,316.24
  5. Step 5: Solve for x
    x = 54,716,316.24/8,615.78
  6. Step 6: Final answer
    x = 6,350.71

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1.5x scale

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.