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Finding the Fourth Proportional to 8,466.61, 12,696.36 and 3,200.74

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Solution

The fourth proportional to 8,466.61, 12,696.36 and 3,200.74 is: 4,799.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,466.61 : 12,696.36 = 3,200.74 : x
  2. Step 2: Convert to fraction form
    8,466.61/12,696.36 = 3,200.74/x
  3. Step 3: Cross multiply
    8,466.61x = 12,696.36 × 3,200.74
  4. Step 4: Simplify right side
    8,466.61x = 40,637,747.31
  5. Step 5: Solve for x
    x = 40,637,747.31/8,466.61
  6. Step 6: Final answer
    x = 4,799.77

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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.