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Finding the Fourth Proportional to 6,166.61, 8,512.70 and 3,931.48

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Solution

The fourth proportional to 6,166.61, 8,512.70 and 3,931.48 is: 5,427.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,166.61 : 8,512.70 = 3,931.48 : x
  2. Step 2: Convert to fraction form
    6,166.61/8,512.70 = 3,931.48/x
  3. Step 3: Cross multiply
    6,166.61x = 8,512.70 × 3,931.48
  4. Step 4: Simplify right side
    6,166.61x = 33,467,500.78
  5. Step 5: Solve for x
    x = 33,467,500.78/6,166.61
  6. Step 6: Final answer
    x = 5,427.21

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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.